validate canons without yatest_common

6 files changed, 918 insertions, 0 deletions

diff --git a/library/cpp/tvmauth/src/ut/parser_ut.cpp b/library/cpp/tvmauth/src/ut/parser_ut.cpp
new file mode 100644
index 0000000000..530f45331a
--- /dev/null
+++ b/library/cpp/tvmauth/src/ut/parser_ut.cpp
@@ -0,0 +1,143 @@
+#include <library/cpp/tvmauth/src/parser.h>
+#include <library/cpp/tvmauth/src/utils.h>
+
+#include <library/cpp/tvmauth/exception.h>
+#include <library/cpp/tvmauth/ticket_status.h>
+
+#include <library/cpp/testing/unittest/registar.h>
+
+Y_UNIT_TEST_SUITE(ParserTestSuite) {
+    using namespace NTvmAuth;
+
+    Y_UNIT_TEST(Keys) {
+        UNIT_ASSERT_EXCEPTION(TParserTvmKeys::ParseStrV1("2:asds"), TMalformedTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TParserTvmKeys::ParseStrV1("3:asds"), TMalformedTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TParserTvmKeys::ParseStrV1("1:+a/sds"), TMalformedTvmKeysException);
+
+        UNIT_ASSERT_VALUES_EQUAL("sdsd", NUtils::Bin2base64url(TParserTvmKeys::ParseStrV1("1:sdsd")));
+    }
+
+    Y_UNIT_TEST(TicketsStrV3) {
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Ok,
+                                                   NUtils::Base64url2bin("CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg"),
+                                                   NUtils::Base64url2bin("ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA"),
+                                                   "3:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:"}),
+                          TParserTickets::ParseStrV3("3:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                     TParserTickets::ServiceFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::UnsupportedVersion,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("2:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                     TParserTickets::ServiceFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::InvalidTicketType,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("3:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                     TParserTickets::UserFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Malformed,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("3:serv::ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                     TParserTickets::ServiceFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Malformed,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("3:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:",
+                                                     TParserTickets::ServiceFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Malformed,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("3:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA:asd",
+                                                     TParserTickets::ServiceFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Malformed,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("3:serv:CgY+-*/IDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                     TParserTickets::ServiceFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Malformed,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("3:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERme/*-+H_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                     TParserTickets::ServiceFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Malformed,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("",
+                                                     TParserTickets::ServiceFlag()));
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Malformed,
+                                                   {},
+                                                   {},
+                                                   {}}),
+                          TParserTickets::ParseStrV3("'",
+                                                     TParserTickets::ServiceFlag()));
+
+        // Invalid proto
+        UNIT_ASSERT_EQUAL(TParserTickets::TStrRes({ETicketStatus::Ok,
+                                                   NUtils::Base64url2bin("YIDRCUkQYBgcIgdiYjpzZXNzIghiYjpzZXNzMg"),
+                                                   NUtils::Base64url2bin("ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA"),
+                                                   "3:serv:YIDRCUkQYBgcIgdiYjpzZXNzIghiYjpzZXNzMg:"}),
+                          TParserTickets::ParseStrV3("3:serv:YIDRCUkQYBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                     TParserTickets::ServiceFlag()));
+    }
+
+    Y_UNIT_TEST(TicketsV3) {
+        NRw::TPublicKeys pub;
+
+        UNIT_ASSERT_EQUAL(ETicketStatus::Malformed,
+                          TParserTickets::ParseV3("3:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERme/*-+H_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                  pub,
+                                                  TParserTickets::ServiceFlag())
+                              .Status);
+
+        // Invalid proto
+        UNIT_ASSERT_EQUAL(ETicketStatus::Malformed,
+                          TParserTickets::ParseV3("3:serv:YIDRCUkQYBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA",
+                                                  pub,
+                                                  TParserTickets::ServiceFlag())
+                              .Status);
+
+        // Expire time == 100500
+        UNIT_ASSERT_EQUAL(ETicketStatus::Expired,
+                          TParserTickets::ParseV3("3:serv:CBAQlJEGIhcIDBAcGgdiYjpzZXNzGghiYjpzZXNzMg:HEzPbsjULegBvgX3nqwFX0GfVhESmN1kEWyeT7U03KAR-sQnNYgm6IuN-b9-lQYQKAJSW6p8ffyucC1yDrWSWRxXVzHJUxAVW4hnbiFDtXrurnEdpMK3izKbmTY25PJ4vH3_TkRXk-_oSAE8RvIFKXlh-aw1tezbXBUpJKvyJ0w",
+                                                  pub,
+                                                  TParserTickets::ServiceFlag())
+                              .Status);
+
+        UNIT_ASSERT_EQUAL(ETicketStatus::MissingKey,
+                          TParserTickets::ParseV3("3:serv:CBAQ__________9_IhcIDBAcGgdiYjpzZXNzGghiYjpzZXNzMg:OKjKEbygehEZWH0XEeLzvf0q0aS0VvSk_CKSXGdpqxPbE4RzU70jeM-X9rXVpbYjt76VgBLlBpumJdyiclulfGPDPiL8nwJuu8AnWIR_o-QqyXbsloo2_syE6w2aYw2Yw_5_qjnipYdxGUWegHAGCj3yeMde6O2BmNZ0OCfg6qU",
+                                                  pub,
+                                                  TParserTickets::ServiceFlag())
+                              .Status);
+
+        pub.emplace(16, NRw::TRwPublicKey(NUtils::Base64url2bin("MIGEAoGBALhrihbf3EpjDQS2sCQHazoFgN0nBbE9eesnnFTfzQELXb2gnJU9enmV_aDqaHKjgtLIPpCgn40lHrn5k6mvH5OdedyI6cCzE-N-GFp3nAq0NDJyMe0fhtIRD__CbT0ulcvkeow65ubXWfw6dBC2gR_34rdMe_L_TGRLMWjDULbN")));
+        UNIT_ASSERT_EQUAL(ETicketStatus::SignBroken,
+                          TParserTickets::ParseV3("3:serv:CBAQ__________9_IhcIDBAcGgdiYjpzZXNzGghiYjpzZXNzMa:OKjKEbygehEZWH0XEeLzvf0q0aS0VvSk_CKSXGdpqxPbE4RzU70jeM-X9rXVpbYjt76VgBLlBpumJdyiclulfGPDPiL8nwJuu8AnWIR_o-QqyXbsloo2_syE6w2aYw2Yw_5_qjnipYdxGUWegHAGCj3yeMde6O2BmNZ0OCfg6qU",
+                                                  pub,
+                                                  TParserTickets::ServiceFlag())
+                              .Status);
+        UNIT_ASSERT_EQUAL(ETicketStatus::SignBroken,
+                          TParserTickets::ParseV3("3:serv:CBAQ__________9_IhcIDBAcGgdiYjpzZXNzGghiYjpzZXNzMg:OKjKEbygehEZWH0XEeLzvf0q0aS0VvSk_CKSXGdpqxPbE4RzU70jeM-X9rXVpbYjt76VgBLlBpumJdyiclulfGPDPiL8nwJuu8AnWIR_o-QqyXbsloo2_syE6w2aYw2Yw_5_qjnipYdxGUWegHAGCj3yeMde6O2BmNZ0OCfg6qa",
+                                                  pub,
+                                                  TParserTickets::ServiceFlag())
+                              .Status);
+        UNIT_ASSERT_EQUAL(ETicketStatus::SignBroken,
+                          TParserTickets::ParseV3("3:serv:CBAQ__________9_IhcIDBAcGgdiYjpzZXNzGghiYjpzZXNzMg:EbygehEZWH0XEeLzvf0q0aS0VvSk_CKSXGdpqxPbE4RzU70jeM-X9rXVpbYjt76VgBLlBpumJdyiclulfGPDPiL8nwJuu8AnWIR_o-QqyXbsloo2_syE6w2aYw2Yw_5_qjnipYdxGUWegHAGCj3yeMde6O2BmNZ0OCfg6qU",
+                                                  pub,
+                                                  TParserTickets::ServiceFlag())
+                              .Status);
+
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok,
+                          TParserTickets::ParseV3("3:serv:CBAQ__________9_IhcIDBAcGgdiYjpzZXNzGghiYjpzZXNzMg:OKjKEbygehEZWH0XEeLzvf0q0aS0VvSk_CKSXGdpqxPbE4RzU70jeM-X9rXVpbYjt76VgBLlBpumJdyiclulfGPDPiL8nwJuu8AnWIR_o-QqyXbsloo2_syE6w2aYw2Yw_5_qjnipYdxGUWegHAGCj3yeMde6O2BmNZ0OCfg6qU",
+                                                  pub,
+                                                  TParserTickets::ServiceFlag())
+                              .Status);
+    }
+}
diff --git a/library/cpp/tvmauth/src/ut/public_ut.cpp b/library/cpp/tvmauth/src/ut/public_ut.cpp
new file mode 100644
index 0000000000..74a483d57b
--- /dev/null
+++ b/library/cpp/tvmauth/src/ut/public_ut.cpp
@@ -0,0 +1,290 @@
+// DO_NOT_STYLE
+#include <library/cpp/tvmauth/src/service_impl.h>
+#include <library/cpp/tvmauth/src/user_impl.h>
+
+#include <library/cpp/tvmauth/exception.h>
+#include <library/cpp/tvmauth/ticket_status.h>
+#include <library/cpp/tvmauth/unittest.h>
+
+#include <library/cpp/testing/unittest/registar.h>
+
+using namespace NTvmAuth;
+
+Y_UNIT_TEST_SUITE(CommonPublicInterfaceTestSuite){
+    Y_UNIT_TEST(StatusTest){
+        UNIT_ASSERT_VALUES_EQUAL("OK",
+                                  StatusToString(ETicketStatus::Ok));
+        UNIT_ASSERT_VALUES_EQUAL("Expired ticket",
+                                  StatusToString(ETicketStatus::Expired));
+        UNIT_ASSERT_VALUES_EQUAL("Invalid BlackBox environment",
+                                  StatusToString(ETicketStatus::InvalidBlackboxEnv));
+        UNIT_ASSERT_VALUES_EQUAL("Invalid ticket destination",
+                                  StatusToString(ETicketStatus::InvalidDst));
+        UNIT_ASSERT_VALUES_EQUAL("Invalid ticket type",
+                                  StatusToString(ETicketStatus::InvalidTicketType));
+        UNIT_ASSERT_VALUES_EQUAL("Malformed ticket",
+                                  StatusToString(ETicketStatus::Malformed));
+        UNIT_ASSERT_VALUES_EQUAL("Invalid ticket signature",
+                                  StatusToString(ETicketStatus::SignBroken));
+        UNIT_ASSERT_VALUES_EQUAL("Context does not have required key to check ticket: public keys are too old",
+                                  StatusToString(ETicketStatus::MissingKey));
+        UNIT_ASSERT_VALUES_EQUAL("Unsupported ticket version",
+                                  StatusToString(ETicketStatus::UnsupportedVersion));
+    }
+}
+
+Y_UNIT_TEST_SUITE(PublicInterfaceServiceTestSuite) {
+    static const TString EMPTY_TVM_KEYS = "1:CpgCCpMCCAEQABqIAjCCAQQCggEAcLEXeH67FQESFUn4_7wnX7wN0PUrBoUsm3QQ4W5vC-qz6sXaEjSwnTV8w1o-z6X9KPLlhzMQvuS38NCNfK4uvJ4Zvfp3YsXJ25-rYtbnrYJHNvHohD-kPCCw_yZpMp21JdWigzQGuV7CtrxUhF-NNrsnUaJrE5-OpEWNt4X6nCItKIYeVcSK6XJUbEWbrNCRbvkSc4ak2ymFeMuHYJVjxh4eQbk7_ZPzodP0WvF6eUYrYeb42imVEOR8ofVLQWE5DVnb1z_TqZm4i1XkS7jMwZuBxBRw8DGdYei0lT_sAf7KST2jC0590NySB3vsBgWEVs1OdUUWA6r-Dvx9dsOQtSCVkQYQAAqZAgqUAggCEAAaiQIwggEFAoIBAQDhEBM5-6YsPWfogKtbluJoCX1WV2KdzOaQ0-OlRbBzeCzw-eQKu12c8WakHBbeCMd1I1TU64SDkDorWjXGIa_2xT6N3zzNAE50roTbPCcmeQrps26woTYfYIuqDdoxYKZNr0lvNLLW47vBr7EKqo1S4KSj7aXK_XYeEvUgIgf3nVIcNrio7VTnFmGGVQCepaL1Hi1gN4yIXjVZ06PBPZ-DxSRu6xOGbFrfKMJeMPs7KOyE-26Q3xOXdTIa1X-zYIucTd_bxUCL4BVbwW2AvbbFsaG7ISmVdGu0XUTmhXs1KrEfUVLRJhE4Dx99hAZXm1_HlYMUeJcMQ_oHOhV94ENFIJaRBhACCpYBCpEBCAMQABqGATCBgwKBgF9t2YJGAJkRRFq6fWhi3m1TFW1UOE0f6ZrfYhHAkpqGlKlh0QVfeTNPpeJhi75xXzCe6oReRUm-0DbqDNhTShC7uGUv1INYnRBQWH6E-5Fc5XrbDFSuGQw2EYjNfHy_HefHJXxQKAqPvxBDKMKkHgV58WtM6rC8jRi9sdX_ig2NIJeRBhABCpYBCpEBCAQQABqGATCBgwKBgGB4d6eLGUBv-Q6EPLehC4S-yuE2HB-_rJ7WkeYwyp-xIPolPrd-PQme2utHB4ZgpXHIu_OFksDe_0bPgZniNRSVRbl7W49DgS5Ya3kMfrYB4DnF5Fta5tn1oV6EwxYD4JONpFTenOJALPGTPawxXEfon_peiHOSBuQMu3_Vn-l1IJiRBhADCpcBCpIBCAUQABqHATCBhAKBgQCTJMKIfmfeZpaI7Q9rnsc29gdWawK7TnpVKRHws1iY7EUlYROeVcMdAwEqVM6f8BVCKLGgzQ7Gar_uuxfUGKwqEQzoppDraw4F75J464-7D5f6_oJQuGIBHZxqbMONtLjBCXRUhQW5szBLmTQ_R3qaJb5vf-h0APZfkYhq1cTttSCZkQYQBAqWAQqRAQgLEAAahgEwgYMCgYBvvGVH_M2H8qxxv94yaDYUTWbRnJ1uiIYc59KIQlfFimMPhSS7x2tqUa2-hI55JiII0Xym6GNkwLhyc1xtWChpVuIdSnbvttbrt4weDMLHqTwNOF6qAsVKGKT1Yh8yf-qb-DSmicgvFc74mBQm_6gAY1iQsf33YX8578ClhKBWHSCVkQYQAAqXAQqSAQgMEAAahwEwgYQCgYEAkuzFcd5TJu7lYWYe2hQLFfUWIIj91BvQQLa_Thln4YtGCO8gG1KJqJm-YlmJOWQG0B7H_5RVhxUxV9KpmFnsDVkzUFKOsCBaYGXc12xPVioawUlAwp5qp3QQtZyx_se97YIoLzuLr46UkLcLnkIrp-Jo46QzYi_QHq45WTm8MQ0glpEGEAIKlwEKkgEIDRAAGocBMIGEAoGBAIUzbxOknXf_rNt17_ir8JlWvrtnCWsQd1MAnl5mgArvavDtKeBYHzi5_Ak7DHlLzuA6YE8W175FxLFKpN2hkz-l-M7ltUSd8N1BvJRhK4t6WffWfC_1wPyoAbeSN2Yb1jygtZJQ8wGoXHcJQUXiMit3eFNyylwsJFj1gzAR4JCdIJeRBhABCpYBCpEBCA4QABqGATCBgwKBgFMcbEpl9ukVR6AO_R6sMyiU11I8b8MBSUCEC15iKsrVO8v_m47_TRRjWPYtQ9eZ7o1ocNJHaGUU7qqInFqtFaVnIceP6NmCsXhjs3MLrWPS8IRAy4Zf4FKmGOx3N9O2vemjUygZ9vUiSkULdVrecinRaT8JQ5RG4bUMY04XGIwFIJiRBhADCpYBCpEBCA8QABqGATCBgwKBgGpCkW-NR3li8GlRvqpq2YZGSIgm_PTyDI2Zwfw69grsBmPpVFW48Vw7xoMN35zcrojEpialB_uQzlpLYOvsMl634CRIuj-n1QE3-gaZTTTE8mg-AR4mcxnTKThPnRQpbuOlYAnriwiasWiQEMbGjq_HmWioYYxFo9USlklQn4-9IJmRBhAE";
+    static const TString EXPIRED_SERVICE_TICKET = "3:serv:CBAQACIZCOUBEBwaCGJiOnNlc3MxGghiYjpzZXNzMg:IwfMNJYEqStY_SixwqJnyHOMCPR7-3HHk4uylB2oVRkthtezq-OOA7QizDvx7VABLs_iTlXuD1r5IjufNei_EiV145eaa3HIg4xCdJXCojMexf2UYJz8mF2b0YzFAy6_KWagU7xo13CyKAqzJuQf5MJcSUf0ecY9hVh36cJ51aw";
+    static const TString MALFORMED_TVM_KEYS = "1:CpgCCpMCCAEQABqIAjCCAQQCggEAcLEXeH67FQESFUn4_7wnX7wN0PUrBoUsm3QQ4W5vC-qz6sXaEjSwnTV8w1o-z6X9KPLlhzMQvuS38NCNfK4uvJ4Zvfp3YsXJ25-rYtbnrYJHNvHohD-kPCCw_yZpMp21JdWigzQGuV7CtrxUhF-NNrsnUaJrE5-OpEWNt4X6nCItKIYeVcSK6XJUbEWbrNCRbvkSc4ak2ymFeMuHYJVjxh4eQbk7_ZPzodP0WvF6eUYrYeb42imVEOR8ofVLQWE5DVnb1z_TqZm4i1XkS7jMwZuBxBRw8DGdYei0lT_sAf7KST2jC0590NySB3vsBgWEVs1OdUUWA6r-Dvx9dsOQtSCVkQYQAAqZAgqUAggCEAAaiQIwggEFAoIBAQDhEBM5-6YsPWfogKtbluJoCX1WV2KdzOaQ0-OlRbBzeCzw-eQKu12c8WakHBbeCMd1I1TU64SDkDorWjXGIa_2xT6N3zzNAE50roTbPCcmeQrps26woTYfYIuqDdoxYKZNr0lvNLLW47vBr7EKqo1S4KSj7aXK_XYeEvUgIgf3nVIcNrio7VTnFmGGVQCepaL1Hi1gN4yIXjVZ06PBPZ-DxSRu6xOGbFrfKMJeMPs7KOyE-26Q3xOXdTIa1X-zYIucTd_bxUCL4BVbwW2AvbbFsaG7ISmVdGu0XUTmhXs1KrEfUVLRJhE4Dx99hAZXm1_HlYMUeJcMQ_oHOhV94ENFIJaRBhACCpYBCpEBCAMQABqGATCBgwKBgF9t2YJGAJkRRFq6fWhi3m1TFW1UOE0f6ZrfYhHAkpqGlKlh0QVfeTNPpeJhi75xXzCe6oReRUm-0DbqDNhTShC7uGUv1INYnRBQWH6E-5Fc5XrbDFSuGQw2EYjNfHy_HefHJXxQKAqPvxBDKMKkHgV58WtM6rC8jRi9sdX_ig2NIJeRBhABCpYBCpEBCAQQABqGATCBgwKBgGB4d6eLGUBv-Q6EPLehC4S-yuE2HB-_rJ7WkeYwyp-xIPolPrd-PQme2utHB4ZgpXHIu_OFksDe_0bPgZniNRSVRbl7W49DgS5Ya3kMfrYB4DnF5Fta5tn1oV6EwxYD4JONpFTenOJALPGTPawxXEfon_peiHOSBuQMu3_Vn-l1IJiRBhADCpcBCpIBCAUQABqHATCBhAKBgQCTJMKIfmfeZpaI7Q9rnsc29gdWawK7TnpVKRHws1iY7EUlYROeVcMdAwEqVM6f8BVCKLGgzQ7Gar_uuxfUGKwqEQzoppDraw4F75J464-7D5f6_oJQuGIBHZxqbMONtLjBCXRUhQW5szBLmTQ_R3qaJb5vf-h0APZfkYhq1cTttSCZkQYQBAqWAQqRAQgLEAAahgEwgYMCgYBvvGVH_M2H8qxxv94yaDYUTWbRnJ1uiIYc59KIQlfFimMPhSS7x2tqUa2-hI55JiII0Xym6GNkwLhyc1xtWChpVuIdSnbvttbrt4weDMLHqTwNOF6qAsVKGKT1Yh8yf-qb-DSmicgvFc74mBQm_6gAY1iQsf33YX8578ClhKBWHSCVkQYQAAqXAQqSAQgMEAAahwEwgYQCgYEAkuzFcd5TJu7lYWYe2hQLFfUWIIj91BvQQLa_Thln4YtGCO8gG1KJqJm-YlmJOWQG0B7H_5RVhxUxV9KpmFnsDVkzUFKOsCBaYGXc12xPVioawUlAwp5qp3QQtZyx_se97YIoLzuLr46UkLcLnkIrp-Jo46QzYi_QHq45WTm8MQ0glpEGEAIKlwEKkgEIDRAAGocBMIGEAoGBAIUzbxOknXf_rNt17_ir8JlWvrtnCWsQd1MAnl5mgArvavDtKeBYHzi5_Ak7DHlLzuA6YE8W175FxLFKpN2hkz-l-M7ltUSd8N1BvJRhK4t6WffWfC_1wPyoAbeSN2Yb1jygtZJQ8wGoXHcJQUXiMit3eFNyylwsJFj1gzAR4JCdIJeRBhABCpYBCpEBCA4QABqGATCBgwKBgFMcbEpl9ukVR6AO_R6sMyiU11I8b8MBSUCEC15iKsrVO8v_m47_TRRjWPYtQ9eZ7o1ocNJHaGUU7qqInFqtFaVnIceP6NmCsXhjs3MLrWPS8IRAy4Zf4FKmGOx3N9O2vemjUygZ9vUiSkULdVrecinRaT8JQ5RG4bUMY04XGIwFIJiRBhADCpYBCpEBCA8QABqGATCBgwKBgGpCkW-NR3li8GlRvqpq2YZGSIgm_PTyDI2Zwfw69grsBmPpVFW48Vw7xoMN35zcrojEpialB_uQzlpLYOvsMl634CRIuj-n1QE3-gaZTTTE8mg-AR4mcxnTKThPnRQpbuOlYAnriwiasWiQEMbGjq_HmWioYYxFo9USlklQn4-9IJmRBhAEEpUBCpIBCAYQABqHATCBhAKBgQCoZkFGm9oLTqjeXZAq6j5S6i7K20V0lNdBBLqfmFBIRuTkYxhs4vUYnWjZrKRAd5bp6_py0csmFmpl_5Yh0b-2pdo_E5PNP7LGRzKyKSiFddyykKKzVOazH8YYldDAfE8Z5HoS9e48an5JsPg0jr-TPu34DnJq3yv2a6dqiKL9zSCakQYSlQEKkgEIEBAAGocBMIGEAoGBALhrihbf3EpjDQS2sCQHazoFgN0nBbE9eesnnFTfzQELXb2gnJU9enmV_aDqaHKjgtLIPpCgn40lHrn5k6mvH5OdedyI6cCzE-N-GFp3nAq0NDJyMe0fhtIRD__CbT0ulcvkeow65ubXWfw6dBC2gR_34rdMe_L_TGRLMWjDULbNIJ";
+    static const TString MALFORMED_TVM_SECRET = "adcvxcv./-+";
+    static const TTvmId NOT_OUR_ID = 27;
+    static const TTvmId OUR_ID = 28;
+    static const TString SECRET = "GRMJrKnj4fOVnvOqe-WyD1";
+    static const TString SERVICE_TICKET_PROTOBUF = "CBAQ__________9_IhkI5QEQHBoIYmI6c2VzczEaCGJiOnNlc3My";
+    static const TTvmId SRC_ID = 229;
+    static const TString UNSUPPORTED_VERSION_SERVICE_TICKET = "2:serv:CBAQ__________9_IhkI5QEQHBoIYmI6c2VzczEaCGJiOnNlc3My:WUPx1cTf05fjD1exB35T5j2DCHWH1YaLJon_a4rN-D7JfXHK1Ai4wM4uSfboHD9xmGQH7extqtlEk1tCTCGm5qbRVloJwWzCZBXo3zKX6i1oBYP_89WcjCNPVe1e8jwGdLsnu6PpxL5cn0xCksiStILH5UmDR6xfkJdnmMG94o8";
+    static const TString VALID_SERVICE_TICKET_1 = "3:serv:CBAQ__________9_IhkI5QEQHBoIYmI6c2VzczEaCGJiOnNlc3My:WUPx1cTf05fjD1exB35T5j2DCHWH1YaLJon_a4rN-D7JfXHK1Ai4wM4uSfboHD9xmGQH7extqtlEk1tCTCGm5qbRVloJwWzCZBXo3zKX6i1oBYP_89WcjCNPVe1e8jwGdLsnu6PpxL5cn0xCksiStILH5UmDR6xfkJdnmMG94o8";
+    static const TString VALID_SERVICE_TICKET_2 = "3:serv:CBAQ__________9_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:JYmABAVLM6y7_T4n1pRcwBfwDfzMV4JJ3cpbEG617zdGgKRZwL7MalsYn5bq1F2ibujMrsF9nzZf8l4s_e-Ivjkz_xu4KMzSp-pUh9V7XIF_smj0WHYpv6gOvWNuK8uIvlZTTKwtQX0qZOL9m-MEeZiHoQPKZGCfJ_qxMUp-J8I";
+    static const TString VALID_SERVICE_TICKET_3 = "3:serv:CBAQ__________9_IgUI5QEQHA:Sd6tmA1CNy2Nf7XevC3x7zr2DrGNRmcl-TxUsDtDW2xI3YXyCxBltWeg0-KtDlqyYuPOP5Jd_-XXNA12KlOPnNzrz3jm-5z8uQl6CjCcrVHUHJ75pGC8r9UOlS8cOgeXQB5dYP-fOWyo5CNadlozx1S2meCIxncbQRV1kCBi4KU";
+
+    Y_UNIT_TEST(BlackboxTvmIdTest) {
+        UNIT_ASSERT_VALUES_EQUAL("222", NBlackboxTvmId::Prod);
+        UNIT_ASSERT_VALUES_EQUAL("224", NBlackboxTvmId::Test);
+        UNIT_ASSERT_VALUES_EQUAL("223", NBlackboxTvmId::ProdYateam);
+        UNIT_ASSERT_VALUES_EQUAL("225", NBlackboxTvmId::TestYateam);
+        UNIT_ASSERT_VALUES_EQUAL("226", NBlackboxTvmId::Stress);
+        UNIT_ASSERT_VALUES_EQUAL("239", NBlackboxTvmId::Mimino);
+    }
+
+    Y_UNIT_TEST(Case1Test) {
+        TServiceContext context1(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        TServiceContext context2 = std::move(context1);
+        TServiceContext context3(std::move(context2));
+
+        TCheckedServiceTicket checkedTicket1 = context3.Check(VALID_SERVICE_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket1.GetStatus());
+        TCheckedServiceTicket checkedTicket2 = std::move(checkedTicket1);
+        TCheckedServiceTicket checkedTicket3(std::move(checkedTicket2));
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket3.GetStatus());
+    }
+
+    Y_UNIT_TEST(ContextExceptionsTest) {
+        UNIT_ASSERT_EXCEPTION(TServiceContext(SECRET, OUR_ID, MALFORMED_TVM_KEYS), TMalformedTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TServiceContext(SECRET, OUR_ID, EMPTY_TVM_KEYS), TEmptyTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TServiceContext(MALFORMED_TVM_SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS), TMalformedTvmSecretException);
+    }
+
+    Y_UNIT_TEST(ContextSignTest) {
+        TServiceContext context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_VALUES_EQUAL(
+            "NsPTYak4Cfk-4vgau5lab3W4GPiTtb2etuj3y4MDPrk",
+            context.SignCgiParamsForTvm(IntToString<10>(std::numeric_limits<time_t>::max()), "13,28", ""));
+    }
+
+    Y_UNIT_TEST(ContextSignExceptionTest) {
+        TServiceContext context = TServiceContext::CheckingFactory(OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_EXCEPTION(
+            context.SignCgiParamsForTvm(IntToString<10>(std::numeric_limits<time_t>::max()), "13,28", ""),
+            TMalformedTvmSecretException
+        );
+
+        context = TServiceContext::SigningFactory(SECRET);
+        UNIT_ASSERT_NO_EXCEPTION(
+            context.SignCgiParamsForTvm(IntToString<10>(std::numeric_limits<time_t>::max()), "13,28", "")
+        );
+    }
+
+    Y_UNIT_TEST(ContextCheckExceptionTest) {
+        TServiceContext context = TServiceContext::CheckingFactory(OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_NO_EXCEPTION(
+            context.Check("ABCDE")
+        );
+
+        context = TServiceContext::SigningFactory(SECRET);
+        UNIT_ASSERT_EXCEPTION(
+            context.Check("ABCDE"),
+            TEmptyTvmKeysException
+        );
+    }
+
+
+    Y_UNIT_TEST(ContextTest) {
+        TServiceContext context1(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        TServiceContext context2 = TServiceContext::CheckingFactory(OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+    }
+
+    Y_UNIT_TEST(Ticket1Test) {
+        TServiceContext context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_SERVICE_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+        UNIT_ASSERT_EQUAL(SRC_ID, checkedTicket.GetSrc());
+        UNIT_ASSERT_EQUAL("ticket_type=serv;expiration_time=9223372036854775807;src=229;dst=28;scope=bb:sess1;scope=bb:sess2;", checkedTicket.DebugInfo());
+    }
+
+    Y_UNIT_TEST(Ticket2Test) {
+        TServiceContext context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_SERVICE_TICKET_2);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=serv;expiration_time=9223372036854775807;src=229;dst=28;scope=bb:sess1;scope=bb:sess10;scope=bb:sess100;scope=bb:sess11;scope=bb:sess12;scope=bb:sess13;scope=bb:sess14;scope=bb:sess15;scope=bb:sess16;scope=bb:sess17;scope=bb:sess18;scope=bb:sess19;scope=bb:sess2;scope=bb:sess20;scope=bb:sess21;scope=bb:sess22;scope=bb:sess23;scope=bb:sess24;scope=bb:sess25;scope=bb:sess26;scope=bb:sess27;scope=bb:sess28;scope=bb:sess29;scope=bb:sess3;scope=bb:sess30;scope=bb:sess31;scope=bb:sess32;scope=bb:sess33;scope=bb:sess34;scope=bb:sess35;scope=bb:sess36;scope=bb:sess37;scope=bb:sess38;scope=bb:sess39;scope=bb:sess4;scope=bb:sess40;scope=bb:sess41;scope=bb:sess42;scope=bb:sess43;scope=bb:sess44;scope=bb:sess45;scope=bb:sess46;scope=bb:sess47;scope=bb:sess48;scope=bb:sess49;scope=bb:sess5;scope=bb:sess50;scope=bb:sess51;scope=bb:sess52;scope=bb:sess53;scope=bb:sess54;scope=bb:sess55;scope=bb:sess56;scope=bb:sess57;scope=bb:sess58;scope=bb:sess59;scope=bb:sess6;scope=bb:sess60;scope=bb:sess61;scope=bb:sess62;scope=bb:sess63;scope=bb:sess64;scope=bb:sess65;scope=bb:sess66;scope=bb:sess67;scope=bb:sess68;scope=bb:sess69;scope=bb:sess7;scope=bb:sess70;scope=bb:sess71;scope=bb:sess72;scope=bb:sess73;scope=bb:sess74;scope=bb:sess75;scope=bb:sess76;scope=bb:sess77;scope=bb:sess78;scope=bb:sess79;scope=bb:sess8;scope=bb:sess80;scope=bb:sess81;scope=bb:sess82;scope=bb:sess83;scope=bb:sess84;scope=bb:sess85;scope=bb:sess86;scope=bb:sess87;scope=bb:sess88;scope=bb:sess89;scope=bb:sess9;scope=bb:sess90;scope=bb:sess91;scope=bb:sess92;scope=bb:sess93;scope=bb:sess94;scope=bb:sess95;scope=bb:sess96;scope=bb:sess97;scope=bb:sess98;scope=bb:sess99;", checkedTicket.DebugInfo());
+    }
+
+    Y_UNIT_TEST(Ticket3Test) {
+        TServiceContext context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_SERVICE_TICKET_3);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=serv;expiration_time=9223372036854775807;src=229;dst=28;", checkedTicket.DebugInfo());
+    }
+
+    Y_UNIT_TEST(TicketCheckingTest) {
+        TServiceContext context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto ticket = context.Check(VALID_SERVICE_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, ticket.GetStatus());
+        UNIT_ASSERT_EQUAL(SRC_ID, ticket.GetSrc());
+    }
+
+    Y_UNIT_TEST(TicketErrorsTest) {
+        TServiceContext context(SECRET, NOT_OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket1 = context.Check(VALID_SERVICE_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::InvalidDst, checkedTicket1.GetStatus());
+
+        auto checkedTicket2 = context.Check(UNSUPPORTED_VERSION_SERVICE_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::UnsupportedVersion, checkedTicket2.GetStatus());
+
+        auto checkedTicket3 = context.Check(EXPIRED_SERVICE_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Expired, checkedTicket3.GetStatus());
+    }
+
+    Y_UNIT_TEST(TicketExceptionsTest) {
+        TServiceContext context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(EXPIRED_SERVICE_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Expired, checkedTicket.GetStatus());
+
+        UNIT_ASSERT(!bool(checkedTicket));
+        UNIT_ASSERT_EXCEPTION(checkedTicket.GetSrc(), TNotAllowedException);
+        UNIT_ASSERT_NO_EXCEPTION(bool(checkedTicket));
+        UNIT_ASSERT_NO_EXCEPTION(checkedTicket.DebugInfo());
+        UNIT_ASSERT_NO_EXCEPTION(checkedTicket.GetStatus());
+    }
+
+    Y_UNIT_TEST(RemoveSignatureTest) {
+        UNIT_ASSERT_VALUES_EQUAL("1:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds",
+                                  NUtils::RemoveTicketSignature("1:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("2:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds",
+                                  NUtils::RemoveTicketSignature("2:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("4:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds",
+                                  NUtils::RemoveTicketSignature("4:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("3.serv.ASDkljbjhsdbfLJHABFJHBslfbsfjs.asdxcvbxcvniueliuweklsvds",
+                                  NUtils::RemoveTicketSignature("3.serv.ASDkljbjhsdbfLJHABFJHBslfbsfjs.asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:",
+                                  NUtils::RemoveTicketSignature("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:",
+                                  NUtils::RemoveTicketSignature("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("3:serv:",
+                                  NUtils::RemoveTicketSignature("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs.asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("asdxcbvfgdsgfasdfxczvdsgfxcdvbcbvf",
+                                  NUtils::RemoveTicketSignature("asdxcbvfgdsgfasdfxczvdsgfxcdvbcbvf"));
+    }
+
+    Y_UNIT_TEST(ResetKeysTest) {
+        TServiceContext context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        TCheckedServiceTicket checkedTicket = context.Check(VALID_SERVICE_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+    }
+}
+
+Y_UNIT_TEST_SUITE(PublicInterfaceUserTestSuite) {
+    static const TString EMPTY_TVM_KEYS = "1:EpUBCpIBCAYQABqHATCBhAKBgQCoZkFGm9oLTqjeXZAq6j5S6i7K20V0lNdBBLqfmFBIRuTkYxhs4vUYnWjZrKRAd5bp6_py0csmFmpl_5Yh0b-2pdo_E5PNP7LGRzKyKSiFddyykKKzVOazH8YYldDAfE8Z5HoS9e48an5JsPg0jr-TPu34DnJq3yv2a6dqiKL9zSCakQY";
+    static const TString EXPIRED_USER_TICKET = "3:user:CA0QABokCgMIyAMKAgh7EMgDGghiYjpzZXNzMRoIYmI6c2VzczIgEigB:D0CmYVwWg91LDYejjeQ2UP8AeiA_mr1q1CUD_lfJ9zQSEYEOYGDTafg4Um2rwOOvQnsD1JHM4zHyMUJ6Jtp9GAm5pmhbXBBZqaCcJpyxLTEC8a81MhJFCCJRvu_G1FiAgRgB25gI3HIbkvHFUEqAIC_nANy7NFQnbKk2S-EQPGY";
+    static const TString MALFORMED_TVM_KEYS = "1:CpgCCpMCCAEQABqIAjCCAQQCggEAcLEXeH67FQESFUn4_7wnX7wN0PUrBoUsm3QQ4W5vC-qz6sXaEjSwnTV8w1o-z6X9KPLlhzMQvuS38NCNfK4uvJ4Zvfp3YsXJ25-rYtbnrYJHNvHohD-kPCCw_yZpMp21JdWigzQGuV7CtrxUhF-NNrsnUaJrE5-OpEWNt4X6nCItKIYeVcSK6XJUbEWbrNCRbvkSc4ak2ymFeMuHYJVjxh4eQbk7_ZPzodP0WvF6eUYrYeb42imVEOR8ofVLQWE5DVnb1z_TqZm4i1XkS7jMwZuBxBRw8DGdYei0lT_sAf7KST2jC0590NySB3vsBgWEVs1OdUUWA6r-Dvx9dsOQtSCVkQYQAAqZAgqUAggCEAAaiQIwggEFAoIBAQDhEBM5-6YsPWfogKtbluJoCX1WV2KdzOaQ0-OlRbBzeCzw-eQKu12c8WakHBbeCMd1I1TU64SDkDorWjXGIa_2xT6N3zzNAE50roTbPCcmeQrps26woTYfYIuqDdoxYKZNr0lvNLLW47vBr7EKqo1S4KSj7aXK_XYeEvUgIgf3nVIcNrio7VTnFmGGVQCepaL1Hi1gN4yIXjVZ06PBPZ-DxSRu6xOGbFrfKMJeMPs7KOyE-26Q3xOXdTIa1X-zYIucTd_bxUCL4BVbwW2AvbbFsaG7ISmVdGu0XUTmhXs1KrEfUVLRJhE4Dx99hAZXm1_HlYMUeJcMQ_oHOhV94ENFIJaRBhACCpYBCpEBCAMQABqGATCBgwKBgF9t2YJGAJkRRFq6fWhi3m1TFW1UOE0f6ZrfYhHAkpqGlKlh0QVfeTNPpeJhi75xXzCe6oReRUm-0DbqDNhTShC7uGUv1INYnRBQWH6E-5Fc5XrbDFSuGQw2EYjNfHy_HefHJXxQKAqPvxBDKMKkHgV58WtM6rC8jRi9sdX_ig2NIJeRBhABCpYBCpEBCAQQABqGATCBgwKBgGB4d6eLGUBv-Q6EPLehC4S-yuE2HB-_rJ7WkeYwyp-xIPolPrd-PQme2utHB4ZgpXHIu_OFksDe_0bPgZniNRSVRbl7W49DgS5Ya3kMfrYB4DnF5Fta5tn1oV6EwxYD4JONpFTenOJALPGTPawxXEfon_peiHOSBuQMu3_Vn-l1IJiRBhADCpcBCpIBCAUQABqHATCBhAKBgQCTJMKIfmfeZpaI7Q9rnsc29gdWawK7TnpVKRHws1iY7EUlYROeVcMdAwEqVM6f8BVCKLGgzQ7Gar_uuxfUGKwqEQzoppDraw4F75J464-7D5f6_oJQuGIBHZxqbMONtLjBCXRUhQW5szBLmTQ_R3qaJb5vf-h0APZfkYhq1cTttSCZkQYQBAqWAQqRAQgLEAAahgEwgYMCgYBvvGVH_M2H8qxxv94yaDYUTWbRnJ1uiIYc59KIQlfFimMPhSS7x2tqUa2-hI55JiII0Xym6GNkwLhyc1xtWChpVuIdSnbvttbrt4weDMLHqTwNOF6qAsVKGKT1Yh8yf-qb-DSmicgvFc74mBQm_6gAY1iQsf33YX8578ClhKBWHSCVkQYQAAqXAQqSAQgMEAAahwEwgYQCgYEAkuzFcd5TJu7lYWYe2hQLFfUWIIj91BvQQLa_Thln4YtGCO8gG1KJqJm-YlmJOWQG0B7H_5RVhxUxV9KpmFnsDVkzUFKOsCBaYGXc12xPVioawUlAwp5qp3QQtZyx_se97YIoLzuLr46UkLcLnkIrp-Jo46QzYi_QHq45WTm8MQ0glpEGEAIKlwEKkgEIDRAAGocBMIGEAoGBAIUzbxOknXf_rNt17_ir8JlWvrtnCWsQd1MAnl5mgArvavDtKeBYHzi5_Ak7DHlLzuA6YE8W175FxLFKpN2hkz-l-M7ltUSd8N1BvJRhK4t6WffWfC_1wPyoAbeSN2Yb1jygtZJQ8wGoXHcJQUXiMit3eFNyylwsJFj1gzAR4JCdIJeRBhABCpYBCpEBCA4QABqGATCBgwKBgFMcbEpl9ukVR6AO_R6sMyiU11I8b8MBSUCEC15iKsrVO8v_m47_TRRjWPYtQ9eZ7o1ocNJHaGUU7qqInFqtFaVnIceP6NmCsXhjs3MLrWPS8IRAy4Zf4FKmGOx3N9O2vemjUygZ9vUiSkULdVrecinRaT8JQ5RG4bUMY04XGIwFIJiRBhADCpYBCpEBCA8QABqGATCBgwKBgGpCkW-NR3li8GlRvqpq2YZGSIgm_PTyDI2Zwfw69grsBmPpVFW48Vw7xoMN35zcrojEpialB_uQzlpLYOvsMl634CRIuj-n1QE3-gaZTTTE8mg-AR4mcxnTKThPnRQpbuOlYAnriwiasWiQEMbGjq_HmWioYYxFo9USlklQn4-9IJmRBhAEEpUBCpIBCAYQABqHATCBhAKBgQCoZkFGm9oLTqjeXZAq6j5S6i7K20V0lNdBBLqfmFBIRuTkYxhs4vUYnWjZrKRAd5bp6_py0csmFmpl_5Yh0b-2pdo_E5PNP7LGRzKyKSiFddyykKKzVOazH8YYldDAfE8Z5HoS9e48an5JsPg0jr-TPu34DnJq3yv2a6dqiKL9zSCakQYSlQEKkgEIEBAAGocBMIGEAoGBALhrihbf3EpjDQS2sCQHazoFgN0nBbE9eesnnFTfzQELXb2gnJU9enmV_aDqaHKjgtLIPpCgn40lHrn5k6mvH5OdedyI6cCzE-N-GFp3nAq0NDJyMe0fhtIRD__CbT0ulcvkeow65ubXWfw6dBC2gR_34rdMe_L_TGRLMWjDULbNIJ";
+    static const TString UNSUPPORTED_VERSION_USER_TICKET = "2:user:CA0Q__________9_GiQKAwjIAwoCCHsQyAMaCGJiOnNlc3MxGghiYjpzZXNzMiASKAE:KJFv5EcXn9krYk19LCvlFrhMW-R4q8mKfXJXCd-RBVBgUQzCOR1Dx2FiOyU-BxUoIsaU0PiwTjbVY5I2onJDilge70Cl5zEPI9pfab2qwklACq_ZBUvD1tzrfNUr88otBGAziHASJWgyVDkhyQ3p7YbN38qpb0vGQrYNxlk4e2I";
+    static const TString USER_TICKET_PROTOBUF = "CA0Q__________9_GiQKAwjIAwoCCHsQyAMaCGJiOnNlc3MxGghiYjpzZXNzMiASKAE";
+    static const TString VALID_USER_TICKET_1 = "3:user:CA0Q__________9_GiQKAwjIAwoCCHsQyAMaCGJiOnNlc3MxGghiYjpzZXNzMiASKAE:KJFv5EcXn9krYk19LCvlFrhMW-R4q8mKfXJXCd-RBVBgUQzCOR1Dx2FiOyU-BxUoIsaU0PiwTjbVY5I2onJDilge70Cl5zEPI9pfab2qwklACq_ZBUvD1tzrfNUr88otBGAziHASJWgyVDkhyQ3p7YbN38qpb0vGQrYNxlk4e2I";
+    static const TString VALID_USER_TICKET_2 = "3:user:CA0Q__________9_GhAKAwjIAwoCCHsQyAMgEigB:KRibGYTJUA2ns0Fn7VYqeMZ1-GdscB1o9pRzELyr7QJrJsfsE8Y_HoVvB8Npr-oalv6AXOpagSc8HpZjAQz8zKMAVE_tI0tL-9DEsHirpawEbpy7OWV7-k18o1m-RaDaKeTlIB45KHbBul1-9aeKkortBfbbXtz_Qy9r_mfFPiQ";
+    static const TString VALID_USER_TICKET_3 = "3:user:CA0Q__________9_Go8bCgIIAAoCCAEKAggCCgIIAwoCCAQKAggFCgIIBgoCCAcKAggICgIICQoCCAoKAggLCgIIDAoCCA0KAggOCgIIDwoCCBAKAggRCgIIEgoCCBMKAggUCgIIFQoCCBYKAggXCgIIGAoCCBkKAggaCgIIGwoCCBwKAggdCgIIHgoCCB8KAgggCgIIIQoCCCIKAggjCgIIJAoCCCUKAggmCgIIJwoCCCgKAggpCgIIKgoCCCsKAggsCgIILQoCCC4KAggvCgIIMAoCCDEKAggyCgIIMwoCCDQKAgg1CgIINgoCCDcKAgg4CgIIOQoCCDoKAgg7CgIIPAoCCD0KAgg-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_AQoDCMABCgMIwQEKAwjCAQoDCMMBCgMIxAEKAwjFAQoDCMYBCgMIxwEKAwjIAQoDCMkBCgMIygEKAwjLAQoDCMwBCgMIzQEKAwjOAQoDCM8BCgMI0AEKAwjRAQoDCNIBCgMI0wEKAwjUAQoDCNUBCgMI1gEKAwjXAQoDCNgBCgMI2QEKAwjaAQoDCNsBCgMI3AEKAwjdAQoDCN4BCgMI3wEKAwjgAQoDCOEBCgMI4gEKAwjjAQoDCOQBCgMI5QEKAwjmAQoDCOcBCgMI6AEKAwjpAQoDCOoBCgMI6wEKAwjsAQoDCO0BCgMI7gEKAwjvAQoDCPABCgMI8QEKAwjyAQoDCPMBCgMI9AEKAwj1AQoDCPYBCgMI9wEKAwj4AQoDCPkBCgMI-gEKAwj7AQoDCPwBCgMI_QEKAwj-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-AIKAwj5AgoDCPoCCgMI-wIKAwj8AgoDCP0CCgMI_gIKAwj_AgoDCIADCgMIgQMKAwiCAwoDCIMDCgMIhAMKAwiFAwoDCIYDCgMIhwMKAwiIAwoDCIkDCgMIigMKAwiLAwoDCIwDCgMIjQMKAwiOAwoDCI8DCgMIkAMKAwiRAwoDCJIDCgMIkwMKAwiUAwoDCJUDCgMIlgMKAwiXAwoDCJgDCgMImQMKAwiaAwoDCJsDCgMInAMKAwidAwoDCJ4DCgMInwMKAwigAwoDCKEDCgMIogMKAwijAwoDCKQDCgMIpQMKAwimAwoDCKcDCgMIqAMKAwipAwoDCKoDCgMIqwMKAwisAwoDCK0DCgMIrgMKAwivAwoDCLADCgMIsQMKAwiyAwoDCLMDCgMItAMKAwi1AwoDCLYDCgMItwMKAwi4AwoDCLkDCgMIugMKAwi7AwoDCLwDCgMIvQMKAwi-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:CX8PIOrxJnQqFXl7wAsiHJ_1VGjoI-asNlCXb8SE8jtI2vdh9x6CqbAurSgIlAAEgotVP-nuUR38x_a9YJuXzmG5AvJ458apWQtODHIDIX6ZaIwMxjS02R7S5LNqXa0gAuU_R6bCWpZdWe2uLMkdpu5KHbDgW08g-uaP_nceDOk";
+
+    Y_UNIT_TEST(Case1Test) {
+        TUserContext context1(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+
+        TCheckedUserTicket checkedTicket1 = context1.Check("2:serv:CgYIDRCUkQYQDBgcIgdiYjpzZXNzIghiYjpzZXNzMg:ERmeH_yzC7K_QsoHTyw7llCsyExEz3CoEopPIuivA0ZAtTaFq_Pa0l9Fhhx_NX9WpOp2CPyY5cFc4PXhcO83jCB7-EGvHNxGN-j2NQalERzPiKqkDCO0Q5etLzSzrfTlvMz7sXDvELNBHyA0PkAQnbz4supY0l-0Q6JBYSEF3zOVMjjE-HeQIFL3ats3_PakaUMWRvgQQ88pVdYZqAtbDw9PlTla7ommygVZQjcfNFXV1pJKRgOCLs-YyCjOJHLKL04zYj0X6KsOCTUeqhj7ml96wLZ-g1X9tyOR2WAr2Ctq7wIEHwqhxOLgOSKqm05xH6Vi3E_hekf50oe2jPfKEA");
+        UNIT_ASSERT_EQUAL(ETicketStatus::UnsupportedVersion, checkedTicket1.GetStatus());
+        UNIT_ASSERT(!checkedTicket1);
+
+        TUserContext context2 = std::move(context1);
+        TUserContext context3(std::move(context2));
+        TCheckedUserTicket checkedTicket2 = context3.Check(VALID_USER_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket2.GetStatus());
+        TCheckedUserTicket checkedTicket3 = std::move(checkedTicket2);
+        TCheckedUserTicket checkedTicket4(std::move(checkedTicket3));
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket4.GetStatus());
+    }
+
+    Y_UNIT_TEST(ContextTest) {
+        TUserContext context(EBlackboxEnv::Prod, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+    }
+
+    Y_UNIT_TEST(ContextExceptionsTest) {
+        UNIT_ASSERT_EXCEPTION(TUserContext(EBlackboxEnv::Prod, EMPTY_TVM_KEYS), TEmptyTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TUserContext(EBlackboxEnv::Prod, MALFORMED_TVM_KEYS), TMalformedTvmKeysException);
+    }
+
+    Y_UNIT_TEST(Ticket1Test) {
+        TUserContext context(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_USER_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+        UNIT_ASSERT_EQUAL(TUids({456, 123}), checkedTicket.GetUids());
+        UNIT_ASSERT_EQUAL(456, checkedTicket.GetDefaultUid());
+        UNIT_ASSERT_EQUAL(TScopes({"bb:sess1", "bb:sess2"}), checkedTicket.GetScopes());
+        UNIT_ASSERT(checkedTicket.HasScope("bb:sess1"));
+        UNIT_ASSERT(checkedTicket.HasScope("bb:sess2"));
+        UNIT_ASSERT(!checkedTicket.HasScope("bb:sess3"));
+        UNIT_ASSERT_EQUAL("ticket_type=user;expiration_time=9223372036854775807;scope=bb:sess1;scope=bb:sess2;default_uid=456;uid=456;uid=123;env=Test;", checkedTicket.DebugInfo());
+    }
+
+    Y_UNIT_TEST(Ticket2Test) {
+        TUserContext context(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_USER_TICKET_2);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=user;expiration_time=9223372036854775807;default_uid=456;uid=456;uid=123;env=Test;", checkedTicket.DebugInfo());
+    }
+
+    Y_UNIT_TEST(Ticket3Test) {
+        TUserContext context(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_USER_TICKET_3);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=user;expiration_time=9223372036854775807;scope=bb:sess1;scope=bb:sess10;scope=bb:sess100;scope=bb:sess11;scope=bb:sess12;scope=bb:sess13;scope=bb:sess14;scope=bb:sess15;scope=bb:sess16;scope=bb:sess17;scope=bb:sess18;scope=bb:sess19;scope=bb:sess2;scope=bb:sess20;scope=bb:sess21;scope=bb:sess22;scope=bb:sess23;scope=bb:sess24;scope=bb:sess25;scope=bb:sess26;scope=bb:sess27;scope=bb:sess28;scope=bb:sess29;scope=bb:sess3;scope=bb:sess30;scope=bb:sess31;scope=bb:sess32;scope=bb:sess33;scope=bb:sess34;scope=bb:sess35;scope=bb:sess36;scope=bb:sess37;scope=bb:sess38;scope=bb:sess39;scope=bb:sess4;scope=bb:sess40;scope=bb:sess41;scope=bb:sess42;scope=bb:sess43;scope=bb:sess44;scope=bb:sess45;scope=bb:sess46;scope=bb:sess47;scope=bb:sess48;scope=bb:sess49;scope=bb:sess5;scope=bb:sess50;scope=bb:sess51;scope=bb:sess52;scope=bb:sess53;scope=bb:sess54;scope=bb:sess55;scope=bb:sess56;scope=bb:sess57;scope=bb:sess58;scope=bb:sess59;scope=bb:sess6;scope=bb:sess60;scope=bb:sess61;scope=bb:sess62;scope=bb:sess63;scope=bb:sess64;scope=bb:sess65;scope=bb:sess66;scope=bb:sess67;scope=bb:sess68;scope=bb:sess69;scope=bb:sess7;scope=bb:sess70;scope=bb:sess71;scope=bb:sess72;scope=bb:sess73;scope=bb:sess74;scope=bb:sess75;scope=bb:sess76;scope=bb:sess77;scope=bb:sess78;scope=bb:sess79;scope=bb:sess8;scope=bb:sess80;scope=bb:sess81;scope=bb:sess82;scope=bb:sess83;scope=bb:sess84;scope=bb:sess85;scope=bb:sess86;scope=bb:sess87;scope=bb:sess88;scope=bb:sess89;scope=bb:sess9;scope=bb:sess90;scope=bb:sess91;scope=bb:sess92;scope=bb:sess93;scope=bb:sess94;scope=bb:sess95;scope=bb:sess96;scope=bb:sess97;scope=bb:sess98;scope=bb:sess99;default_uid=456;uid=0;uid=1;uid=2;uid=3;uid=4;uid=5;uid=6;uid=7;uid=8;uid=9;uid=10;uid=11;uid=12;uid=13;uid=14;uid=15;uid=16;uid=17;uid=18;uid=19;uid=20;uid=21;uid=22;uid=23;uid=24;uid=25;uid=26;uid=27;uid=28;uid=29;uid=30;uid=31;uid=32;uid=33;uid=34;uid=35;uid=36;uid=37;uid=38;uid=39;uid=40;uid=41;uid=42;uid=43;uid=44;uid=45;uid=46;uid=47;uid=48;uid=49;uid=50;uid=51;uid=52;uid=53;uid=54;uid=55;uid=56;uid=57;uid=58;uid=59;uid=60;uid=61;uid=62;uid=63;uid=64;uid=65;uid=66;uid=67;uid=68;uid=69;uid=70;uid=71;uid=72;uid=73;uid=74;uid=75;uid=76;uid=77;uid=78;uid=79;uid=80;uid=81;uid=82;uid=83;uid=84;uid=85;uid=86;uid=87;uid=88;uid=89;uid=90;uid=91;uid=92;uid=93;uid=94;uid=95;uid=96;uid=97;uid=98;uid=99;uid=100;uid=101;uid=102;uid=103;uid=104;uid=105;uid=106;uid=107;uid=108;uid=109;uid=110;uid=111;uid=112;uid=113;uid=114;uid=115;uid=116;uid=117;uid=118;uid=119;uid=120;uid=121;uid=122;uid=123;uid=124;uid=125;uid=126;uid=127;uid=128;uid=129;uid=130;uid=131;uid=132;uid=133;uid=134;uid=135;uid=136;uid=137;uid=138;uid=139;uid=140;uid=141;uid=142;uid=143;uid=144;uid=145;uid=146;uid=147;uid=148;uid=149;uid=150;uid=151;uid=152;uid=153;uid=154;uid=155;uid=156;uid=157;uid=158;uid=159;uid=160;uid=161;uid=162;uid=163;uid=164;uid=165;uid=166;uid=167;uid=168;uid=169;uid=170;uid=171;uid=172;uid=173;uid=174;uid=175;uid=176;uid=177;uid=178;uid=179;uid=180;uid=181;uid=182;uid=183;uid=184;uid=185;uid=186;uid=187;uid=188;uid=189;uid=190;uid=191;uid=192;uid=193;uid=194;uid=195;uid=196;uid=197;uid=198;uid=199;uid=200;uid=201;uid=202;uid=203;uid=204;uid=205;uid=206;uid=207;uid=208;uid=209;uid=210;uid=211;uid=212;uid=213;uid=214;uid=215;uid=216;uid=217;uid=218;uid=219;uid=220;uid=221;uid=222;uid=223;uid=224;uid=225;uid=226;uid=227;uid=228;uid=229;uid=230;uid=231;uid=232;uid=233;uid=234;uid=235;uid=236;uid=237;uid=238;uid=239;uid=240;uid=241;uid=242;uid=243;uid=244;uid=245;uid=246;uid=247;uid=248;uid=249;uid=250;uid=251;uid=252;uid=253;uid=254;uid=255;uid=256;uid=257;uid=258;uid=259;uid=260;uid=261;uid=262;uid=263;uid=264;uid=265;uid=266;uid=267;uid=268;uid=269;uid=270;uid=271;uid=272;uid=273;uid=274;uid=275;uid=276;uid=277;uid=278;uid=279;uid=280;uid=281;uid=282;uid=283;uid=284;uid=285;uid=286;uid=287;uid=288;uid=289;uid=290;uid=291;uid=292;uid=293;uid=294;uid=295;uid=296;uid=297;uid=298;uid=299;uid=300;uid=301;uid=302;uid=303;uid=304;uid=305;uid=306;uid=307;uid=308;uid=309;uid=310;uid=311;uid=312;uid=313;uid=314;uid=315;uid=316;uid=317;uid=318;uid=319;uid=320;uid=321;uid=322;uid=323;uid=324;uid=325;uid=326;uid=327;uid=328;uid=329;uid=330;uid=331;uid=332;uid=333;uid=334;uid=335;uid=336;uid=337;uid=338;uid=339;uid=340;uid=341;uid=342;uid=343;uid=344;uid=345;uid=346;uid=347;uid=348;uid=349;uid=350;uid=351;uid=352;uid=353;uid=354;uid=355;uid=356;uid=357;uid=358;uid=359;uid=360;uid=361;uid=362;uid=363;uid=364;uid=365;uid=366;uid=367;uid=368;uid=369;uid=370;uid=371;uid=372;uid=373;uid=374;uid=375;uid=376;uid=377;uid=378;uid=379;uid=380;uid=381;uid=382;uid=383;uid=384;uid=385;uid=386;uid=387;uid=388;uid=389;uid=390;uid=391;uid=392;uid=393;uid=394;uid=395;uid=396;uid=397;uid=398;uid=399;uid=400;uid=401;uid=402;uid=403;uid=404;uid=405;uid=406;uid=407;uid=408;uid=409;uid=410;uid=411;uid=412;uid=413;uid=414;uid=415;uid=416;uid=417;uid=418;uid=419;uid=420;uid=421;uid=422;uid=423;uid=424;uid=425;uid=426;uid=427;uid=428;uid=429;uid=430;uid=431;uid=432;uid=433;uid=434;uid=435;uid=436;uid=437;uid=438;uid=439;uid=440;uid=441;uid=442;uid=443;uid=444;uid=445;uid=446;uid=447;uid=448;uid=449;uid=450;uid=451;uid=452;uid=453;uid=454;uid=455;uid=456;uid=457;uid=458;uid=459;uid=460;uid=461;uid=462;uid=463;uid=464;uid=465;uid=466;uid=467;uid=468;uid=469;uid=470;uid=471;uid=472;uid=473;uid=474;uid=475;uid=476;uid=477;uid=478;uid=479;uid=480;uid=481;uid=482;uid=483;uid=484;uid=485;uid=486;uid=487;uid=488;uid=489;uid=490;uid=491;uid=492;uid=493;uid=494;uid=495;uid=496;uid=497;uid=498;uid=499;env=Test;", checkedTicket.DebugInfo());
+    }
+
+    Y_UNIT_TEST(TicketErrorsTest) {
+        TUserContext contextTest(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket1 = contextTest.Check(UNSUPPORTED_VERSION_USER_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::UnsupportedVersion, checkedTicket1.GetStatus());
+
+        auto checkedTicket2 = contextTest.Check(EXPIRED_USER_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Expired, checkedTicket2.GetStatus());
+
+        TUserContext contextProd(EBlackboxEnv::Prod, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket3 = contextProd.Check(VALID_USER_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::InvalidBlackboxEnv, checkedTicket3.GetStatus());
+    }
+
+    Y_UNIT_TEST(TicketExceptionsTest) {
+        TUserContext contextTest(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = contextTest.Check(EXPIRED_USER_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Expired, checkedTicket.GetStatus());
+
+        UNIT_ASSERT_EXCEPTION(checkedTicket.GetDefaultUid(), TNotAllowedException);
+        UNIT_ASSERT_EXCEPTION(checkedTicket.GetUids(), TNotAllowedException);
+        UNIT_ASSERT_EXCEPTION(checkedTicket.GetScopes(), TNotAllowedException);
+        UNIT_ASSERT_EXCEPTION(checkedTicket.HasScope(""), TNotAllowedException);
+        UNIT_ASSERT_NO_EXCEPTION(bool(checkedTicket));
+        UNIT_ASSERT_NO_EXCEPTION(checkedTicket.DebugInfo());
+        UNIT_ASSERT_NO_EXCEPTION(checkedTicket.GetStatus());
+    }
+
+    Y_UNIT_TEST(ResetKeysTest) {
+        TUserContext context(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_USER_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+    }
+}
diff --git a/library/cpp/tvmauth/src/ut/service_ut.cpp b/library/cpp/tvmauth/src/ut/service_ut.cpp
new file mode 100644
index 0000000000..5b6b5143bd
--- /dev/null
+++ b/library/cpp/tvmauth/src/ut/service_ut.cpp
@@ -0,0 +1,156 @@
+#include <library/cpp/tvmauth/src/service_impl.h>
+#include <library/cpp/tvmauth/src/utils.h>
+
+#include <library/cpp/tvmauth/exception.h>
+#include <library/cpp/tvmauth/unittest.h>
+
+#include <library/cpp/testing/unittest/registar.h>
+
+#include <util/string/cast.h>
+
+using namespace NTvmAuth;
+
+Y_UNIT_TEST_SUITE(ServiceTestSuite) {
+    Y_UNIT_TEST_DECLARE(TicketProtoTest);
+}
+
+class TTestServiceTicketImpl: public TCheckedServiceTicket::TImpl {
+    using TCheckedServiceTicket::TImpl::TImpl;
+    Y_UNIT_TEST_FRIEND(ServiceTestSuite, TicketProtoTest);
+};
+
+Y_UNIT_TEST_SUITE_IMPLEMENTATION(ServiceTestSuite) {
+    static const TString EMPTY_TVM_KEYS = "1:CpgCCpMCCAEQABqIAjCCAQQCggEAcLEXeH67FQESFUn4_7wnX7wN0PUrBoUsm3QQ4W5vC-qz6sXaEjSwnTV8w1o-z6X9KPLlhzMQvuS38NCNfK4uvJ4Zvfp3YsXJ25-rYtbnrYJHNvHohD-kPCCw_yZpMp21JdWigzQGuV7CtrxUhF-NNrsnUaJrE5-OpEWNt4X6nCItKIYeVcSK6XJUbEWbrNCRbvkSc4ak2ymFeMuHYJVjxh4eQbk7_ZPzodP0WvF6eUYrYeb42imVEOR8ofVLQWE5DVnb1z_TqZm4i1XkS7jMwZuBxBRw8DGdYei0lT_sAf7KST2jC0590NySB3vsBgWEVs1OdUUWA6r-Dvx9dsOQtSCVkQYQAAqZAgqUAggCEAAaiQIwggEFAoIBAQDhEBM5-6YsPWfogKtbluJoCX1WV2KdzOaQ0-OlRbBzeCzw-eQKu12c8WakHBbeCMd1I1TU64SDkDorWjXGIa_2xT6N3zzNAE50roTbPCcmeQrps26woTYfYIuqDdoxYKZNr0lvNLLW47vBr7EKqo1S4KSj7aXK_XYeEvUgIgf3nVIcNrio7VTnFmGGVQCepaL1Hi1gN4yIXjVZ06PBPZ-DxSRu6xOGbFrfKMJeMPs7KOyE-26Q3xOXdTIa1X-zYIucTd_bxUCL4BVbwW2AvbbFsaG7ISmVdGu0XUTmhXs1KrEfUVLRJhE4Dx99hAZXm1_HlYMUeJcMQ_oHOhV94ENFIJaRBhACCpYBCpEBCAMQABqGATCBgwKBgF9t2YJGAJkRRFq6fWhi3m1TFW1UOE0f6ZrfYhHAkpqGlKlh0QVfeTNPpeJhi75xXzCe6oReRUm-0DbqDNhTShC7uGUv1INYnRBQWH6E-5Fc5XrbDFSuGQw2EYjNfHy_HefHJXxQKAqPvxBDKMKkHgV58WtM6rC8jRi9sdX_ig2NIJeRBhABCpYBCpEBCAQQABqGATCBgwKBgGB4d6eLGUBv-Q6EPLehC4S-yuE2HB-_rJ7WkeYwyp-xIPolPrd-PQme2utHB4ZgpXHIu_OFksDe_0bPgZniNRSVRbl7W49DgS5Ya3kMfrYB4DnF5Fta5tn1oV6EwxYD4JONpFTenOJALPGTPawxXEfon_peiHOSBuQMu3_Vn-l1IJiRBhADCpcBCpIBCAUQABqHATCBhAKBgQCTJMKIfmfeZpaI7Q9rnsc29gdWawK7TnpVKRHws1iY7EUlYROeVcMdAwEqVM6f8BVCKLGgzQ7Gar_uuxfUGKwqEQzoppDraw4F75J464-7D5f6_oJQuGIBHZxqbMONtLjBCXRUhQW5szBLmTQ_R3qaJb5vf-h0APZfkYhq1cTttSCZkQYQBAqWAQqRAQgLEAAahgEwgYMCgYBvvGVH_M2H8qxxv94yaDYUTWbRnJ1uiIYc59KIQlfFimMPhSS7x2tqUa2-hI55JiII0Xym6GNkwLhyc1xtWChpVuIdSnbvttbrt4weDMLHqTwNOF6qAsVKGKT1Yh8yf-qb-DSmicgvFc74mBQm_6gAY1iQsf33YX8578ClhKBWHSCVkQYQAAqXAQqSAQgMEAAahwEwgYQCgYEAkuzFcd5TJu7lYWYe2hQLFfUWIIj91BvQQLa_Thln4YtGCO8gG1KJqJm-YlmJOWQG0B7H_5RVhxUxV9KpmFnsDVkzUFKOsCBaYGXc12xPVioawUlAwp5qp3QQtZyx_se97YIoLzuLr46UkLcLnkIrp-Jo46QzYi_QHq45WTm8MQ0glpEGEAIKlwEKkgEIDRAAGocBMIGEAoGBAIUzbxOknXf_rNt17_ir8JlWvrtnCWsQd1MAnl5mgArvavDtKeBYHzi5_Ak7DHlLzuA6YE8W175FxLFKpN2hkz-l-M7ltUSd8N1BvJRhK4t6WffWfC_1wPyoAbeSN2Yb1jygtZJQ8wGoXHcJQUXiMit3eFNyylwsJFj1gzAR4JCdIJeRBhABCpYBCpEBCA4QABqGATCBgwKBgFMcbEpl9ukVR6AO_R6sMyiU11I8b8MBSUCEC15iKsrVO8v_m47_TRRjWPYtQ9eZ7o1ocNJHaGUU7qqInFqtFaVnIceP6NmCsXhjs3MLrWPS8IRAy4Zf4FKmGOx3N9O2vemjUygZ9vUiSkULdVrecinRaT8JQ5RG4bUMY04XGIwFIJiRBhADCpYBCpEBCA8QABqGATCBgwKBgGpCkW-NR3li8GlRvqpq2YZGSIgm_PTyDI2Zwfw69grsBmPpVFW48Vw7xoMN35zcrojEpialB_uQzlpLYOvsMl634CRIuj-n1QE3-gaZTTTE8mg-AR4mcxnTKThPnRQpbuOlYAnriwiasWiQEMbGjq_HmWioYYxFo9USlklQn4-9IJmRBhAE";
+    static const TString EXPIRED_SERVICE_TICKET = "3:serv:CBAQACIZCOUBEBwaCGJiOnNlc3MxGghiYjpzZXNzMg:IwfMNJYEqStY_SixwqJnyHOMCPR7-3HHk4uylB2oVRkthtezq-OOA7QizDvx7VABLs_iTlXuD1r5IjufNei_EiV145eaa3HIg4xCdJXCojMexf2UYJz8mF2b0YzFAy6_KWagU7xo13CyKAqzJuQf5MJcSUf0ecY9hVh36cJ51aw";
+    static const TString MALFORMED_TVM_KEYS = "1:CpgCCpMCCAEQABqIAjCCAQQCggEAcLEXeH67FQESFUn4_7wnX7wN0PUrBoUsm3QQ4W5vC-qz6sXaEjSwnTV8w1o-z6X9KPLlhzMQvuS38NCNfK4uvJ4Zvfp3YsXJ25-rYtbnrYJHNvHohD-kPCCw_yZpMp21JdWigzQGuV7CtrxUhF-NNrsnUaJrE5-OpEWNt4X6nCItKIYeVcSK6XJUbEWbrNCRbvkSc4ak2ymFeMuHYJVjxh4eQbk7_ZPzodP0WvF6eUYrYeb42imVEOR8ofVLQWE5DVnb1z_TqZm4i1XkS7jMwZuBxBRw8DGdYei0lT_sAf7KST2jC0590NySB3vsBgWEVs1OdUUWA6r-Dvx9dsOQtSCVkQYQAAqZAgqUAggCEAAaiQIwggEFAoIBAQDhEBM5-6YsPWfogKtbluJoCX1WV2KdzOaQ0-OlRbBzeCzw-eQKu12c8WakHBbeCMd1I1TU64SDkDorWjXGIa_2xT6N3zzNAE50roTbPCcmeQrps26woTYfYIuqDdoxYKZNr0lvNLLW47vBr7EKqo1S4KSj7aXK_XYeEvUgIgf3nVIcNrio7VTnFmGGVQCepaL1Hi1gN4yIXjVZ06PBPZ-DxSRu6xOGbFrfKMJeMPs7KOyE-26Q3xOXdTIa1X-zYIucTd_bxUCL4BVbwW2AvbbFsaG7ISmVdGu0XUTmhXs1KrEfUVLRJhE4Dx99hAZXm1_HlYMUeJcMQ_oHOhV94ENFIJaRBhACCpYBCpEBCAMQABqGATCBgwKBgF9t2YJGAJkRRFq6fWhi3m1TFW1UOE0f6ZrfYhHAkpqGlKlh0QVfeTNPpeJhi75xXzCe6oReRUm-0DbqDNhTShC7uGUv1INYnRBQWH6E-5Fc5XrbDFSuGQw2EYjNfHy_HefHJXxQKAqPvxBDKMKkHgV58WtM6rC8jRi9sdX_ig2NIJeRBhABCpYBCpEBCAQQABqGATCBgwKBgGB4d6eLGUBv-Q6EPLehC4S-yuE2HB-_rJ7WkeYwyp-xIPolPrd-PQme2utHB4ZgpXHIu_OFksDe_0bPgZniNRSVRbl7W49DgS5Ya3kMfrYB4DnF5Fta5tn1oV6EwxYD4JONpFTenOJALPGTPawxXEfon_peiHOSBuQMu3_Vn-l1IJiRBhADCpcBCpIBCAUQABqHATCBhAKBgQCTJMKIfmfeZpaI7Q9rnsc29gdWawK7TnpVKRHws1iY7EUlYROeVcMdAwEqVM6f8BVCKLGgzQ7Gar_uuxfUGKwqEQzoppDraw4F75J464-7D5f6_oJQuGIBHZxqbMONtLjBCXRUhQW5szBLmTQ_R3qaJb5vf-h0APZfkYhq1cTttSCZkQYQBAqWAQqRAQgLEAAahgEwgYMCgYBvvGVH_M2H8qxxv94yaDYUTWbRnJ1uiIYc59KIQlfFimMPhSS7x2tqUa2-hI55JiII0Xym6GNkwLhyc1xtWChpVuIdSnbvttbrt4weDMLHqTwNOF6qAsVKGKT1Yh8yf-qb-DSmicgvFc74mBQm_6gAY1iQsf33YX8578ClhKBWHSCVkQYQAAqXAQqSAQgMEAAahwEwgYQCgYEAkuzFcd5TJu7lYWYe2hQLFfUWIIj91BvQQLa_Thln4YtGCO8gG1KJqJm-YlmJOWQG0B7H_5RVhxUxV9KpmFnsDVkzUFKOsCBaYGXc12xPVioawUlAwp5qp3QQtZyx_se97YIoLzuLr46UkLcLnkIrp-Jo46QzYi_QHq45WTm8MQ0glpEGEAIKlwEKkgEIDRAAGocBMIGEAoGBAIUzbxOknXf_rNt17_ir8JlWvrtnCWsQd1MAnl5mgArvavDtKeBYHzi5_Ak7DHlLzuA6YE8W175FxLFKpN2hkz-l-M7ltUSd8N1BvJRhK4t6WffWfC_1wPyoAbeSN2Yb1jygtZJQ8wGoXHcJQUXiMit3eFNyylwsJFj1gzAR4JCdIJeRBhABCpYBCpEBCA4QABqGATCBgwKBgFMcbEpl9ukVR6AO_R6sMyiU11I8b8MBSUCEC15iKsrVO8v_m47_TRRjWPYtQ9eZ7o1ocNJHaGUU7qqInFqtFaVnIceP6NmCsXhjs3MLrWPS8IRAy4Zf4FKmGOx3N9O2vemjUygZ9vUiSkULdVrecinRaT8JQ5RG4bUMY04XGIwFIJiRBhADCpYBCpEBCA8QABqGATCBgwKBgGpCkW-NR3li8GlRvqpq2YZGSIgm_PTyDI2Zwfw69grsBmPpVFW48Vw7xoMN35zcrojEpialB_uQzlpLYOvsMl634CRIuj-n1QE3-gaZTTTE8mg-AR4mcxnTKThPnRQpbuOlYAnriwiasWiQEMbGjq_HmWioYYxFo9USlklQn4-9IJmRBhAEEpUBCpIBCAYQABqHATCBhAKBgQCoZkFGm9oLTqjeXZAq6j5S6i7K20V0lNdBBLqfmFBIRuTkYxhs4vUYnWjZrKRAd5bp6_py0csmFmpl_5Yh0b-2pdo_E5PNP7LGRzKyKSiFddyykKKzVOazH8YYldDAfE8Z5HoS9e48an5JsPg0jr-TPu34DnJq3yv2a6dqiKL9zSCakQYSlQEKkgEIEBAAGocBMIGEAoGBALhrihbf3EpjDQS2sCQHazoFgN0nBbE9eesnnFTfzQELXb2gnJU9enmV_aDqaHKjgtLIPpCgn40lHrn5k6mvH5OdedyI6cCzE-N-GFp3nAq0NDJyMe0fhtIRD__CbT0ulcvkeow65ubXWfw6dBC2gR_34rdMe_L_TGRLMWjDULbNIJ";
+    static const TString MALFORMED_TVM_SECRET = "adcvxcv./-+";
+    static const TTvmId NOT_OUR_ID = 27;
+    static const TTvmId OUR_ID = 28;
+    static const TString SECRET = "GRMJrKnj4fOVnvOqe-WyD1";
+    static const TString SERVICE_TICKET_PROTOBUF = "CBAQ__________9_IhkI5QEQHBoIYmI6c2VzczEaCGJiOnNlc3My";
+    static const TTvmId SRC_ID = 229;
+    static const TString UNSUPPORTED_VERSION_SERVICE_TICKET = "2:serv:CBAQ__________9_IhkI5QEQHBoIYmI6c2VzczEaCGJiOnNlc3My:WUPx1cTf05fjD1exB35T5j2DCHWH1YaLJon_a4rN-D7JfXHK1Ai4wM4uSfboHD9xmGQH7extqtlEk1tCTCGm5qbRVloJwWzCZBXo3zKX6i1oBYP_89WcjCNPVe1e8jwGdLsnu6PpxL5cn0xCksiStILH5UmDR6xfkJdnmMG94o8";
+    static const TString VALID_SERVICE_TICKET_1 = "3:serv:CBAQ__________9_IhkI5QEQHBoIYmI6c2VzczEaCGJiOnNlc3My:WUPx1cTf05fjD1exB35T5j2DCHWH1YaLJon_a4rN-D7JfXHK1Ai4wM4uSfboHD9xmGQH7extqtlEk1tCTCGm5qbRVloJwWzCZBXo3zKX6i1oBYP_89WcjCNPVe1e8jwGdLsnu6PpxL5cn0xCksiStILH5UmDR6xfkJdnmMG94o8";
+    static const TString VALID_SERVICE_TICKET_2 = "3:serv:CBAQ__________9_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:JYmABAVLM6y7_T4n1pRcwBfwDfzMV4JJ3cpbEG617zdGgKRZwL7MalsYn5bq1F2ibujMrsF9nzZf8l4s_e-Ivjkz_xu4KMzSp-pUh9V7XIF_smj0WHYpv6gOvWNuK8uIvlZTTKwtQX0qZOL9m-MEeZiHoQPKZGCfJ_qxMUp-J8I";
+    static const TString VALID_SERVICE_TICKET_3 = "3:serv:CBAQ__________9_IgUI5QEQHA:Sd6tmA1CNy2Nf7XevC3x7zr2DrGNRmcl-TxUsDtDW2xI3YXyCxBltWeg0-KtDlqyYuPOP5Jd_-XXNA12KlOPnNzrz3jm-5z8uQl6CjCcrVHUHJ75pGC8r9UOlS8cOgeXQB5dYP-fOWyo5CNadlozx1S2meCIxncbQRV1kCBi4KU";
+    static const TString VALID_SERVICE_TICKET_ISSUER = "3:serv:CBAQ__________9_IgsI5QEQHCDr1MT4Ag:Gu66XJT_nKnIRJjFy1561wFhIqkJItcSTGftLo7Yvi7i5wIdV-QuKT_-IMPpgjxnnGbt1Dy3Ys2TEoeJAb0TdaCYG1uy3vpoLONmTx9AenN5dx1HHf46cypLK5D3OdiTjxvqI9uGmSIKrSdRxU8gprpu5QiBDPZqVCWhM60FVSY";
+
+    Y_UNIT_TEST(ContextExceptionsTest) {
+        UNIT_ASSERT_EXCEPTION(TServiceContext::TImpl(SECRET, OUR_ID, MALFORMED_TVM_KEYS), TMalformedTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TServiceContext::TImpl(SECRET, OUR_ID, EMPTY_TVM_KEYS), TEmptyTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TServiceContext::TImpl(MALFORMED_TVM_SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS), TMalformedTvmSecretException);
+    }
+
+    Y_UNIT_TEST(ContextSignTest) {
+        TServiceContext::TImpl context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_VALUES_EQUAL(
+            "NsPTYak4Cfk-4vgau5lab3W4GPiTtb2etuj3y4MDPrk",
+            context.SignCgiParamsForTvm(IntToString<10>(std::numeric_limits<time_t>::max()), "13,28", ""));
+    }
+
+    Y_UNIT_TEST(Ticket1Test) {
+        TServiceContext::TImpl context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_SERVICE_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+        UNIT_ASSERT_EQUAL(std::numeric_limits<time_t>::max(), checkedTicket->GetExpirationTime());
+        UNIT_ASSERT_EQUAL(SRC_ID, checkedTicket->GetSrc());
+        UNIT_ASSERT_EQUAL(TScopes({"bb:sess1", "bb:sess2"}), checkedTicket->GetScopes());
+        UNIT_ASSERT(checkedTicket->HasScope("bb:sess1"));
+        UNIT_ASSERT(checkedTicket->HasScope("bb:sess2"));
+        UNIT_ASSERT(!checkedTicket->HasScope("bb:sess3"));
+        UNIT_ASSERT_EQUAL("ticket_type=serv;expiration_time=9223372036854775807;src=229;dst=28;scope=bb:sess1;scope=bb:sess2;", checkedTicket->DebugInfo());
+        UNIT_ASSERT(!checkedTicket->GetIssuerUid());
+    }
+
+    Y_UNIT_TEST(Ticket2Test) {
+        TServiceContext::TImpl context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_SERVICE_TICKET_2);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=serv;expiration_time=9223372036854775807;src=229;dst=28;scope=bb:sess1;scope=bb:sess10;scope=bb:sess100;scope=bb:sess11;scope=bb:sess12;scope=bb:sess13;scope=bb:sess14;scope=bb:sess15;scope=bb:sess16;scope=bb:sess17;scope=bb:sess18;scope=bb:sess19;scope=bb:sess2;scope=bb:sess20;scope=bb:sess21;scope=bb:sess22;scope=bb:sess23;scope=bb:sess24;scope=bb:sess25;scope=bb:sess26;scope=bb:sess27;scope=bb:sess28;scope=bb:sess29;scope=bb:sess3;scope=bb:sess30;scope=bb:sess31;scope=bb:sess32;scope=bb:sess33;scope=bb:sess34;scope=bb:sess35;scope=bb:sess36;scope=bb:sess37;scope=bb:sess38;scope=bb:sess39;scope=bb:sess4;scope=bb:sess40;scope=bb:sess41;scope=bb:sess42;scope=bb:sess43;scope=bb:sess44;scope=bb:sess45;scope=bb:sess46;scope=bb:sess47;scope=bb:sess48;scope=bb:sess49;scope=bb:sess5;scope=bb:sess50;scope=bb:sess51;scope=bb:sess52;scope=bb:sess53;scope=bb:sess54;scope=bb:sess55;scope=bb:sess56;scope=bb:sess57;scope=bb:sess58;scope=bb:sess59;scope=bb:sess6;scope=bb:sess60;scope=bb:sess61;scope=bb:sess62;scope=bb:sess63;scope=bb:sess64;scope=bb:sess65;scope=bb:sess66;scope=bb:sess67;scope=bb:sess68;scope=bb:sess69;scope=bb:sess7;scope=bb:sess70;scope=bb:sess71;scope=bb:sess72;scope=bb:sess73;scope=bb:sess74;scope=bb:sess75;scope=bb:sess76;scope=bb:sess77;scope=bb:sess78;scope=bb:sess79;scope=bb:sess8;scope=bb:sess80;scope=bb:sess81;scope=bb:sess82;scope=bb:sess83;scope=bb:sess84;scope=bb:sess85;scope=bb:sess86;scope=bb:sess87;scope=bb:sess88;scope=bb:sess89;scope=bb:sess9;scope=bb:sess90;scope=bb:sess91;scope=bb:sess92;scope=bb:sess93;scope=bb:sess94;scope=bb:sess95;scope=bb:sess96;scope=bb:sess97;scope=bb:sess98;scope=bb:sess99;", checkedTicket->DebugInfo());
+        UNIT_ASSERT(!checkedTicket->GetIssuerUid());
+    }
+
+    Y_UNIT_TEST(Ticket3Test) {
+        TServiceContext::TImpl context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_SERVICE_TICKET_3);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=serv;expiration_time=9223372036854775807;src=229;dst=28;", checkedTicket->DebugInfo());
+        UNIT_ASSERT(!checkedTicket->GetIssuerUid());
+    }
+
+    Y_UNIT_TEST(TicketIssuerTest) {
+        TServiceContext::TImpl context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_SERVICE_TICKET_ISSUER);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=serv;expiration_time=9223372036854775807;src=229;dst=28;issuer_uid=789654123;",
+                                 checkedTicket->DebugInfo());
+        UNIT_ASSERT(checkedTicket->GetIssuerUid());
+        UNIT_ASSERT_VALUES_EQUAL(789654123, *checkedTicket->GetIssuerUid());
+    }
+
+    Y_UNIT_TEST(TicketErrorsTest) {
+        TServiceContext::TImpl context(SECRET, NOT_OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket1 = context.Check(VALID_SERVICE_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::InvalidDst, checkedTicket1->GetStatus());
+
+        auto checkedTicket2 = context.Check(UNSUPPORTED_VERSION_SERVICE_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::UnsupportedVersion, checkedTicket2->GetStatus());
+
+        auto checkedTicket3 = context.Check(EXPIRED_SERVICE_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Expired, checkedTicket3->GetStatus());
+    }
+
+    Y_UNIT_TEST(TicketExceptionTest) {
+        TServiceContext::TImpl context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+
+        auto checkedTicket = context.Check(EXPIRED_SERVICE_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Expired, checkedTicket->GetStatus());
+
+        UNIT_ASSERT_EXCEPTION(checkedTicket->GetScopes(), TNotAllowedException);
+        UNIT_ASSERT_EXCEPTION(checkedTicket->GetSrc(), TNotAllowedException);
+        UNIT_ASSERT_EXCEPTION(checkedTicket->HasScope(""), TNotAllowedException);
+        UNIT_ASSERT_NO_EXCEPTION(bool(*checkedTicket));
+        UNIT_ASSERT_NO_EXCEPTION(checkedTicket->DebugInfo());
+    }
+
+    Y_UNIT_TEST(TicketProtoTest) {
+        ticket2::Ticket protobufTicket;
+        UNIT_ASSERT(protobufTicket.ParseFromString(NUtils::Base64url2bin(SERVICE_TICKET_PROTOBUF)));
+        TTestServiceTicketImpl checkedTicket(ETicketStatus::Ok, std::move(protobufTicket));
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket.GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL(std::numeric_limits<time_t>::max(), checkedTicket.GetExpirationTime());
+        UNIT_ASSERT_EQUAL(SRC_ID, checkedTicket.GetSrc());
+    }
+
+    Y_UNIT_TEST(ResetKeysTest) {
+        TServiceContext::TImpl context(SECRET, OUR_ID, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        context.ResetKeys(NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_SERVICE_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+    }
+
+    Y_UNIT_TEST(CreateTicketForTests) {
+        TCheckedServiceTicket t = NTvmAuth::NUnittest::CreateServiceTicket(ETicketStatus::Ok, 42);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, t.GetStatus());
+        UNIT_ASSERT_EQUAL(42, t.GetSrc());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=serv;src=42;dst=100500;", t.DebugInfo());
+    }
+
+    Y_UNIT_TEST(CreateForTests) {
+        auto t = TCheckedServiceTicket::TImpl::CreateTicketForTests(ETicketStatus::Ok, 456, {});
+        UNIT_ASSERT_VALUES_EQUAL(ETicketStatus::Ok, t->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL(456, t->GetSrc());
+        UNIT_ASSERT(!t->GetIssuerUid());
+
+        t = TCheckedServiceTicket::TImpl::CreateTicketForTests(ETicketStatus::Ok, 456, 100800);
+        UNIT_ASSERT_VALUES_EQUAL(ETicketStatus::Ok, t->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL(456, t->GetSrc());
+        UNIT_ASSERT(t->GetIssuerUid());
+        UNIT_ASSERT_VALUES_EQUAL(*t->GetIssuerUid(), 100800);
+
+        t = TCheckedServiceTicket::TImpl::CreateTicketForTests(ETicketStatus::Expired, 456, {});
+        UNIT_ASSERT_VALUES_EQUAL(ETicketStatus::Expired, t->GetStatus());
+        UNIT_ASSERT_EXCEPTION_CONTAINS(t->GetSrc(), TNotAllowedException, "Method cannot be used in non-valid ticket");
+        UNIT_ASSERT_EXCEPTION_CONTAINS(t->GetIssuerUid(), TNotAllowedException, "Method cannot be used in non-valid ticket");
+    }
+}
diff --git a/library/cpp/tvmauth/src/ut/user_ut.cpp b/library/cpp/tvmauth/src/ut/user_ut.cpp
new file mode 100644
index 0000000000..c040e94974
--- /dev/null
+++ b/library/cpp/tvmauth/src/ut/user_ut.cpp
@@ -0,0 +1,216 @@
+#include <library/cpp/tvmauth/src/user_impl.h>
+#include <library/cpp/tvmauth/src/utils.h>
+
+#include <library/cpp/tvmauth/exception.h>
+#include <library/cpp/tvmauth/unittest.h>
+
+#include <library/cpp/testing/unittest/registar.h>
+
+using namespace NTvmAuth;
+
+Y_UNIT_TEST_SUITE(UserTestSuite) {
+    Y_UNIT_TEST_DECLARE(TicketProtoTest);
+}
+
+class TTestUserTicketImpl: TCheckedUserTicket::TImpl {
+    using TCheckedUserTicket::TImpl::TImpl;
+    Y_UNIT_TEST_FRIEND(UserTestSuite, TicketProtoTest);
+};
+
+Y_UNIT_TEST_SUITE_IMPLEMENTATION(UserTestSuite) {
+    static const TString EMPTY_TVM_KEYS = "1:EpUBCpIBCAYQABqHATCBhAKBgQCoZkFGm9oLTqjeXZAq6j5S6i7K20V0lNdBBLqfmFBIRuTkYxhs4vUYnWjZrKRAd5bp6_py0csmFmpl_5Yh0b-2pdo_E5PNP7LGRzKyKSiFddyykKKzVOazH8YYldDAfE8Z5HoS9e48an5JsPg0jr-TPu34DnJq3yv2a6dqiKL9zSCakQY";
+    static const TString EXPIRED_USER_TICKET = "3:user:CA0QABokCgMIyAMKAgh7EMgDGghiYjpzZXNzMRoIYmI6c2VzczIgEigB:D0CmYVwWg91LDYejjeQ2UP8AeiA_mr1q1CUD_lfJ9zQSEYEOYGDTafg4Um2rwOOvQnsD1JHM4zHyMUJ6Jtp9GAm5pmhbXBBZqaCcJpyxLTEC8a81MhJFCCJRvu_G1FiAgRgB25gI3HIbkvHFUEqAIC_nANy7NFQnbKk2S-EQPGY";
+    static const TString MALFORMED_TVM_KEYS = "1:CpgCCpMCCAEQABqIAjCCAQQCggEAcLEXeH67FQESFUn4_7wnX7wN0PUrBoUsm3QQ4W5vC-qz6sXaEjSwnTV8w1o-z6X9KPLlhzMQvuS38NCNfK4uvJ4Zvfp3YsXJ25-rYtbnrYJHNvHohD-kPCCw_yZpMp21JdWigzQGuV7CtrxUhF-NNrsnUaJrE5-OpEWNt4X6nCItKIYeVcSK6XJUbEWbrNCRbvkSc4ak2ymFeMuHYJVjxh4eQbk7_ZPzodP0WvF6eUYrYeb42imVEOR8ofVLQWE5DVnb1z_TqZm4i1XkS7jMwZuBxBRw8DGdYei0lT_sAf7KST2jC0590NySB3vsBgWEVs1OdUUWA6r-Dvx9dsOQtSCVkQYQAAqZAgqUAggCEAAaiQIwggEFAoIBAQDhEBM5-6YsPWfogKtbluJoCX1WV2KdzOaQ0-OlRbBzeCzw-eQKu12c8WakHBbeCMd1I1TU64SDkDorWjXGIa_2xT6N3zzNAE50roTbPCcmeQrps26woTYfYIuqDdoxYKZNr0lvNLLW47vBr7EKqo1S4KSj7aXK_XYeEvUgIgf3nVIcNrio7VTnFmGGVQCepaL1Hi1gN4yIXjVZ06PBPZ-DxSRu6xOGbFrfKMJeMPs7KOyE-26Q3xOXdTIa1X-zYIucTd_bxUCL4BVbwW2AvbbFsaG7ISmVdGu0XUTmhXs1KrEfUVLRJhE4Dx99hAZXm1_HlYMUeJcMQ_oHOhV94ENFIJaRBhACCpYBCpEBCAMQABqGATCBgwKBgF9t2YJGAJkRRFq6fWhi3m1TFW1UOE0f6ZrfYhHAkpqGlKlh0QVfeTNPpeJhi75xXzCe6oReRUm-0DbqDNhTShC7uGUv1INYnRBQWH6E-5Fc5XrbDFSuGQw2EYjNfHy_HefHJXxQKAqPvxBDKMKkHgV58WtM6rC8jRi9sdX_ig2NIJeRBhABCpYBCpEBCAQQABqGATCBgwKBgGB4d6eLGUBv-Q6EPLehC4S-yuE2HB-_rJ7WkeYwyp-xIPolPrd-PQme2utHB4ZgpXHIu_OFksDe_0bPgZniNRSVRbl7W49DgS5Ya3kMfrYB4DnF5Fta5tn1oV6EwxYD4JONpFTenOJALPGTPawxXEfon_peiHOSBuQMu3_Vn-l1IJiRBhADCpcBCpIBCAUQABqHATCBhAKBgQCTJMKIfmfeZpaI7Q9rnsc29gdWawK7TnpVKRHws1iY7EUlYROeVcMdAwEqVM6f8BVCKLGgzQ7Gar_uuxfUGKwqEQzoppDraw4F75J464-7D5f6_oJQuGIBHZxqbMONtLjBCXRUhQW5szBLmTQ_R3qaJb5vf-h0APZfkYhq1cTttSCZkQYQBAqWAQqRAQgLEAAahgEwgYMCgYBvvGVH_M2H8qxxv94yaDYUTWbRnJ1uiIYc59KIQlfFimMPhSS7x2tqUa2-hI55JiII0Xym6GNkwLhyc1xtWChpVuIdSnbvttbrt4weDMLHqTwNOF6qAsVKGKT1Yh8yf-qb-DSmicgvFc74mBQm_6gAY1iQsf33YX8578ClhKBWHSCVkQYQAAqXAQqSAQgMEAAahwEwgYQCgYEAkuzFcd5TJu7lYWYe2hQLFfUWIIj91BvQQLa_Thln4YtGCO8gG1KJqJm-YlmJOWQG0B7H_5RVhxUxV9KpmFnsDVkzUFKOsCBaYGXc12xPVioawUlAwp5qp3QQtZyx_se97YIoLzuLr46UkLcLnkIrp-Jo46QzYi_QHq45WTm8MQ0glpEGEAIKlwEKkgEIDRAAGocBMIGEAoGBAIUzbxOknXf_rNt17_ir8JlWvrtnCWsQd1MAnl5mgArvavDtKeBYHzi5_Ak7DHlLzuA6YE8W175FxLFKpN2hkz-l-M7ltUSd8N1BvJRhK4t6WffWfC_1wPyoAbeSN2Yb1jygtZJQ8wGoXHcJQUXiMit3eFNyylwsJFj1gzAR4JCdIJeRBhABCpYBCpEBCA4QABqGATCBgwKBgFMcbEpl9ukVR6AO_R6sMyiU11I8b8MBSUCEC15iKsrVO8v_m47_TRRjWPYtQ9eZ7o1ocNJHaGUU7qqInFqtFaVnIceP6NmCsXhjs3MLrWPS8IRAy4Zf4FKmGOx3N9O2vemjUygZ9vUiSkULdVrecinRaT8JQ5RG4bUMY04XGIwFIJiRBhADCpYBCpEBCA8QABqGATCBgwKBgGpCkW-NR3li8GlRvqpq2YZGSIgm_PTyDI2Zwfw69grsBmPpVFW48Vw7xoMN35zcrojEpialB_uQzlpLYOvsMl634CRIuj-n1QE3-gaZTTTE8mg-AR4mcxnTKThPnRQpbuOlYAnriwiasWiQEMbGjq_HmWioYYxFo9USlklQn4-9IJmRBhAEEpUBCpIBCAYQABqHATCBhAKBgQCoZkFGm9oLTqjeXZAq6j5S6i7K20V0lNdBBLqfmFBIRuTkYxhs4vUYnWjZrKRAd5bp6_py0csmFmpl_5Yh0b-2pdo_E5PNP7LGRzKyKSiFddyykKKzVOazH8YYldDAfE8Z5HoS9e48an5JsPg0jr-TPu34DnJq3yv2a6dqiKL9zSCakQYSlQEKkgEIEBAAGocBMIGEAoGBALhrihbf3EpjDQS2sCQHazoFgN0nBbE9eesnnFTfzQELXb2gnJU9enmV_aDqaHKjgtLIPpCgn40lHrn5k6mvH5OdedyI6cCzE-N-GFp3nAq0NDJyMe0fhtIRD__CbT0ulcvkeow65ubXWfw6dBC2gR_34rdMe_L_TGRLMWjDULbNIJ";
+    static const TString UNSUPPORTED_VERSION_USER_TICKET = "2:user:CA0Q__________9_GiQKAwjIAwoCCHsQyAMaCGJiOnNlc3MxGghiYjpzZXNzMiASKAE:KJFv5EcXn9krYk19LCvlFrhMW-R4q8mKfXJXCd-RBVBgUQzCOR1Dx2FiOyU-BxUoIsaU0PiwTjbVY5I2onJDilge70Cl5zEPI9pfab2qwklACq_ZBUvD1tzrfNUr88otBGAziHASJWgyVDkhyQ3p7YbN38qpb0vGQrYNxlk4e2I";
+    static const TString USER_TICKET_PROTOBUF = "CA0Q__________9_GiQKAwjIAwoCCHsQyAMaCGJiOnNlc3MxGghiYjpzZXNzMiASKAE";
+    static const TString VALID_USER_TICKET_1 = "3:user:CA0Q__________9_GiQKAwjIAwoCCHsQyAMaCGJiOnNlc3MxGghiYjpzZXNzMiASKAE:KJFv5EcXn9krYk19LCvlFrhMW-R4q8mKfXJXCd-RBVBgUQzCOR1Dx2FiOyU-BxUoIsaU0PiwTjbVY5I2onJDilge70Cl5zEPI9pfab2qwklACq_ZBUvD1tzrfNUr88otBGAziHASJWgyVDkhyQ3p7YbN38qpb0vGQrYNxlk4e2I";
+    static const TString VALID_USER_TICKET_2 = "3:user:CA0Q__________9_GhAKAwjIAwoCCHsQyAMgEigB:KRibGYTJUA2ns0Fn7VYqeMZ1-GdscB1o9pRzELyr7QJrJsfsE8Y_HoVvB8Npr-oalv6AXOpagSc8HpZjAQz8zKMAVE_tI0tL-9DEsHirpawEbpy7OWV7-k18o1m-RaDaKeTlIB45KHbBul1-9aeKkortBfbbXtz_Qy9r_mfFPiQ";
+    static const TString VALID_USER_TICKET_3 = "3:user:CA0Q__________9_Go8bCgIIAAoCCAEKAggCCgIIAwoCCAQKAggFCgIIBgoCCAcKAggICgIICQoCCAoKAggLCgIIDAoCCA0KAggOCgIIDwoCCBAKAggRCgIIEgoCCBMKAggUCgIIFQoCCBYKAggXCgIIGAoCCBkKAggaCgIIGwoCCBwKAggdCgIIHgoCCB8KAgggCgIIIQoCCCIKAggjCgIIJAoCCCUKAggmCgIIJwoCCCgKAggpCgIIKgoCCCsKAggsCgIILQoCCC4KAggvCgIIMAoCCDEKAggyCgIIMwoCCDQKAgg1CgIINgoCCDcKAgg4CgIIOQoCCDoKAgg7CgIIPAoCCD0KAgg-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_AQoDCMABCgMIwQEKAwjCAQoDCMMBCgMIxAEKAwjFAQoDCMYBCgMIxwEKAwjIAQoDCMkBCgMIygEKAwjLAQoDCMwBCgMIzQEKAwjOAQoDCM8BCgMI0AEKAwjRAQoDCNIBCgMI0wEKAwjUAQoDCNUBCgMI1gEKAwjXAQoDCNgBCgMI2QEKAwjaAQoDCNsBCgMI3AEKAwjdAQoDCN4BCgMI3wEKAwjgAQoDCOEBCgMI4gEKAwjjAQoDCOQBCgMI5QEKAwjmAQoDCOcBCgMI6AEKAwjpAQoDCOoBCgMI6wEKAwjsAQoDCO0BCgMI7gEKAwjvAQoDCPABCgMI8QEKAwjyAQoDCPMBCgMI9AEKAwj1AQoDCPYBCgMI9wEKAwj4AQoDCPkBCgMI-gEKAwj7AQoDCPwBCgMI_QEKAwj-AQoDCP8BCgMIgAIKAwiBAgoDCIICCgMIgwIKAwiEAgoDCIUCCgMIhgIKAwiHAgoDCIgCCgMIiQIKAwiKAgoDCIsCCgMIjAIKAwiNAgoDCI4CCgMIjwIKAwiQAgoDCJECCgMIkgIKAwiTAgoDCJQCCgMIlQIKAwiWAgoDCJcCCgMImAIKAwiZAgoDCJoCCgMImwIKAwicAgoDCJ0CCgMIngIKAwifAgoDCKACCgMIoQIKAwiiAgoDCKMCCgMIpAIKAwilAgoDCKYCCgMIpwIKAwioAgoDCKkCCgMIqgIKAwirAgoDCKwCCgMIrQIKAwiuAgoDCK8CCgMIsAIKAwixAgoDCLICCgMIswIKAwi0AgoDCLUCCgMItgIKAwi3AgoDCLgCCgMIuQIKAwi6AgoDCLsCCgMIvAIKAwi9AgoDCL4CCgMIvwIKAwjAAgoDCMECCgMIwgIKAwjDAgoDCMQCCgMIxQIKAwjGAgoDCMcCCgMIyAIKAwjJAgoDCMoCCgMIywIKAwjMAgoDCM0CCgMIzgIKAwjPAgoDCNACCgMI0QIKAwjSAgoDCNMCCgMI1AIKAwjVAgoDCNYCCgMI1wIKAwjYAgoDCNkCCgMI2gIKAwjbAgoDCNwCCgMI3QIKAwjeAgoDCN8CCgMI4AIKAwjhAgoDCOICCgMI4wIKAwjkAgoDCOUCCgMI5gIKAwjnAgoDCOgCCgMI6QIKAwjqAgoDCOsCCgMI7AIKAwjtAgoDCO4CCgMI7wIKAwjwAgoDCPECCgMI8gIKAwjzAgoDCPQCCgMI9QIKAwj2AgoDCPcCCgMI-AIKAwj5AgoDCPoCCgMI-wIKAwj8AgoDCP0CCgMI_gIKAwj_AgoDCIADCgMIgQMKAwiCAwoDCIMDCgMIhAMKAwiFAwoDCIYDCgMIhwMKAwiIAwoDCIkDCgMIigMKAwiLAwoDCIwDCgMIjQMKAwiOAwoDCI8DCgMIkAMKAwiRAwoDCJIDCgMIkwMKAwiUAwoDCJUDCgMIlgMKAwiXAwoDCJgDCgMImQMKAwiaAwoDCJsDCgMInAMKAwidAwoDCJ4DCgMInwMKAwigAwoDCKEDCgMIogMKAwijAwoDCKQDCgMIpQMKAwimAwoDCKcDCgMIqAMKAwipAwoDCKoDCgMIqwMKAwisAwoDCK0DCgMIrgMKAwivAwoDCLADCgMIsQMKAwiyAwoDCLMDCgMItAMKAwi1AwoDCLYDCgMItwMKAwi4AwoDCLkDCgMIugMKAwi7AwoDCLwDCgMIvQMKAwi-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:CX8PIOrxJnQqFXl7wAsiHJ_1VGjoI-asNlCXb8SE8jtI2vdh9x6CqbAurSgIlAAEgotVP-nuUR38x_a9YJuXzmG5AvJ458apWQtODHIDIX6ZaIwMxjS02R7S5LNqXa0gAuU_R6bCWpZdWe2uLMkdpu5KHbDgW08g-uaP_nceDOk";
+
+    Y_UNIT_TEST(ContextText) {
+        TUserContext::TImpl context(EBlackboxEnv::Prod, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_EQUAL(2, context.GetKeys().size());
+        UNIT_ASSERT_NO_EXCEPTION(context.ResetKeys(NUnittest::TVMKNIFE_PUBLIC_KEYS));
+        UNIT_ASSERT_EQUAL(2, context.GetKeys().size());
+    }
+
+    Y_UNIT_TEST(ContextEnvTest) {
+        TUserContext::TImpl p(EBlackboxEnv::Prod, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_EQUAL(2, p.GetKeys().size());
+        UNIT_ASSERT(p.IsAllowed(tvm_keys::Prod));
+        UNIT_ASSERT(!p.IsAllowed(tvm_keys::ProdYateam));
+        UNIT_ASSERT(!p.IsAllowed(tvm_keys::Test));
+        UNIT_ASSERT(!p.IsAllowed(tvm_keys::TestYateam));
+        UNIT_ASSERT(!p.IsAllowed(tvm_keys::Stress));
+
+        TUserContext::TImpl pt(EBlackboxEnv::ProdYateam, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_EQUAL(2, pt.GetKeys().size());
+        UNIT_ASSERT(!pt.IsAllowed(tvm_keys::Prod));
+        UNIT_ASSERT(pt.IsAllowed(tvm_keys::ProdYateam));
+        UNIT_ASSERT(!pt.IsAllowed(tvm_keys::Test));
+        UNIT_ASSERT(!pt.IsAllowed(tvm_keys::TestYateam));
+        UNIT_ASSERT(!pt.IsAllowed(tvm_keys::Stress));
+
+        TUserContext::TImpl t(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_EQUAL(2, t.GetKeys().size());
+        UNIT_ASSERT(!t.IsAllowed(tvm_keys::Prod));
+        UNIT_ASSERT(!t.IsAllowed(tvm_keys::ProdYateam));
+        UNIT_ASSERT(t.IsAllowed(tvm_keys::Test));
+        UNIT_ASSERT(!t.IsAllowed(tvm_keys::TestYateam));
+        UNIT_ASSERT(!t.IsAllowed(tvm_keys::Stress));
+
+        TUserContext::TImpl tt(EBlackboxEnv::TestYateam, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_EQUAL(2, tt.GetKeys().size());
+        UNIT_ASSERT(!tt.IsAllowed(tvm_keys::Prod));
+        UNIT_ASSERT(!tt.IsAllowed(tvm_keys::ProdYateam));
+        UNIT_ASSERT(!tt.IsAllowed(tvm_keys::Test));
+        UNIT_ASSERT(tt.IsAllowed(tvm_keys::TestYateam));
+        UNIT_ASSERT(!tt.IsAllowed(tvm_keys::Stress));
+
+        TUserContext::TImpl s(EBlackboxEnv::Stress, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        UNIT_ASSERT_EQUAL(4, s.GetKeys().size());
+        UNIT_ASSERT(s.IsAllowed(tvm_keys::Prod));
+        UNIT_ASSERT(!s.IsAllowed(tvm_keys::ProdYateam));
+        UNIT_ASSERT(!s.IsAllowed(tvm_keys::Test));
+        UNIT_ASSERT(!s.IsAllowed(tvm_keys::TestYateam));
+        UNIT_ASSERT(s.IsAllowed(tvm_keys::Stress));
+    }
+
+    Y_UNIT_TEST(ContextExceptionsText) {
+        UNIT_ASSERT_EXCEPTION(TUserContext::TImpl(EBlackboxEnv::Prod, EMPTY_TVM_KEYS), TEmptyTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TUserContext::TImpl(EBlackboxEnv::Prod, MALFORMED_TVM_KEYS), TMalformedTvmKeysException);
+        UNIT_ASSERT_EXCEPTION(TUserContext::TImpl(EBlackboxEnv::Prod, "adcvxcv./-+"), TMalformedTvmKeysException);
+    }
+
+    Y_UNIT_TEST(Ticket1Test) {
+        TUserContext::TImpl context(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_USER_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+        UNIT_ASSERT_EQUAL(std::numeric_limits<time_t>::max(), checkedTicket->GetExpirationTime());
+        UNIT_ASSERT_EQUAL(TUids({456, 123}), checkedTicket->GetUids());
+        UNIT_ASSERT_EQUAL(456, checkedTicket->GetDefaultUid());
+        UNIT_ASSERT_EQUAL(TScopes({"bb:sess1", "bb:sess2"}), checkedTicket->GetScopes());
+        UNIT_ASSERT(checkedTicket->HasScope("bb:sess1"));
+        UNIT_ASSERT(checkedTicket->HasScope("bb:sess2"));
+        UNIT_ASSERT(!checkedTicket->HasScope("bb:sess3"));
+        UNIT_ASSERT_EQUAL("ticket_type=user;expiration_time=9223372036854775807;scope=bb:sess1;scope=bb:sess2;default_uid=456;uid=456;uid=123;env=Test;", checkedTicket->DebugInfo());
+    }
+
+    Y_UNIT_TEST(Ticket2Test) {
+        TUserContext::TImpl context(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_USER_TICKET_2);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=user;expiration_time=9223372036854775807;default_uid=456;uid=456;uid=123;env=Test;", checkedTicket->DebugInfo());
+    }
+
+    Y_UNIT_TEST(Ticket3Test) {
+        TUserContext::TImpl context(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_USER_TICKET_3);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=user;expiration_time=9223372036854775807;scope=bb:sess1;scope=bb:sess10;scope=bb:sess100;scope=bb:sess11;scope=bb:sess12;scope=bb:sess13;scope=bb:sess14;scope=bb:sess15;scope=bb:sess16;scope=bb:sess17;scope=bb:sess18;scope=bb:sess19;scope=bb:sess2;scope=bb:sess20;scope=bb:sess21;scope=bb:sess22;scope=bb:sess23;scope=bb:sess24;scope=bb:sess25;scope=bb:sess26;scope=bb:sess27;scope=bb:sess28;scope=bb:sess29;scope=bb:sess3;scope=bb:sess30;scope=bb:sess31;scope=bb:sess32;scope=bb:sess33;scope=bb:sess34;scope=bb:sess35;scope=bb:sess36;scope=bb:sess37;scope=bb:sess38;scope=bb:sess39;scope=bb:sess4;scope=bb:sess40;scope=bb:sess41;scope=bb:sess42;scope=bb:sess43;scope=bb:sess44;scope=bb:sess45;scope=bb:sess46;scope=bb:sess47;scope=bb:sess48;scope=bb:sess49;scope=bb:sess5;scope=bb:sess50;scope=bb:sess51;scope=bb:sess52;scope=bb:sess53;scope=bb:sess54;scope=bb:sess55;scope=bb:sess56;scope=bb:sess57;scope=bb:sess58;scope=bb:sess59;scope=bb:sess6;scope=bb:sess60;scope=bb:sess61;scope=bb:sess62;scope=bb:sess63;scope=bb:sess64;scope=bb:sess65;scope=bb:sess66;scope=bb:sess67;scope=bb:sess68;scope=bb:sess69;scope=bb:sess7;scope=bb:sess70;scope=bb:sess71;scope=bb:sess72;scope=bb:sess73;scope=bb:sess74;scope=bb:sess75;scope=bb:sess76;scope=bb:sess77;scope=bb:sess78;scope=bb:sess79;scope=bb:sess8;scope=bb:sess80;scope=bb:sess81;scope=bb:sess82;scope=bb:sess83;scope=bb:sess84;scope=bb:sess85;scope=bb:sess86;scope=bb:sess87;scope=bb:sess88;scope=bb:sess89;scope=bb:sess9;scope=bb:sess90;scope=bb:sess91;scope=bb:sess92;scope=bb:sess93;scope=bb:sess94;scope=bb:sess95;scope=bb:sess96;scope=bb:sess97;scope=bb:sess98;scope=bb:sess99;default_uid=456;uid=0;uid=1;uid=2;uid=3;uid=4;uid=5;uid=6;uid=7;uid=8;uid=9;uid=10;uid=11;uid=12;uid=13;uid=14;uid=15;uid=16;uid=17;uid=18;uid=19;uid=20;uid=21;uid=22;uid=23;uid=24;uid=25;uid=26;uid=27;uid=28;uid=29;uid=30;uid=31;uid=32;uid=33;uid=34;uid=35;uid=36;uid=37;uid=38;uid=39;uid=40;uid=41;uid=42;uid=43;uid=44;uid=45;uid=46;uid=47;uid=48;uid=49;uid=50;uid=51;uid=52;uid=53;uid=54;uid=55;uid=56;uid=57;uid=58;uid=59;uid=60;uid=61;uid=62;uid=63;uid=64;uid=65;uid=66;uid=67;uid=68;uid=69;uid=70;uid=71;uid=72;uid=73;uid=74;uid=75;uid=76;uid=77;uid=78;uid=79;uid=80;uid=81;uid=82;uid=83;uid=84;uid=85;uid=86;uid=87;uid=88;uid=89;uid=90;uid=91;uid=92;uid=93;uid=94;uid=95;uid=96;uid=97;uid=98;uid=99;uid=100;uid=101;uid=102;uid=103;uid=104;uid=105;uid=106;uid=107;uid=108;uid=109;uid=110;uid=111;uid=112;uid=113;uid=114;uid=115;uid=116;uid=117;uid=118;uid=119;uid=120;uid=121;uid=122;uid=123;uid=124;uid=125;uid=126;uid=127;uid=128;uid=129;uid=130;uid=131;uid=132;uid=133;uid=134;uid=135;uid=136;uid=137;uid=138;uid=139;uid=140;uid=141;uid=142;uid=143;uid=144;uid=145;uid=146;uid=147;uid=148;uid=149;uid=150;uid=151;uid=152;uid=153;uid=154;uid=155;uid=156;uid=157;uid=158;uid=159;uid=160;uid=161;uid=162;uid=163;uid=164;uid=165;uid=166;uid=167;uid=168;uid=169;uid=170;uid=171;uid=172;uid=173;uid=174;uid=175;uid=176;uid=177;uid=178;uid=179;uid=180;uid=181;uid=182;uid=183;uid=184;uid=185;uid=186;uid=187;uid=188;uid=189;uid=190;uid=191;uid=192;uid=193;uid=194;uid=195;uid=196;uid=197;uid=198;uid=199;uid=200;uid=201;uid=202;uid=203;uid=204;uid=205;uid=206;uid=207;uid=208;uid=209;uid=210;uid=211;uid=212;uid=213;uid=214;uid=215;uid=216;uid=217;uid=218;uid=219;uid=220;uid=221;uid=222;uid=223;uid=224;uid=225;uid=226;uid=227;uid=228;uid=229;uid=230;uid=231;uid=232;uid=233;uid=234;uid=235;uid=236;uid=237;uid=238;uid=239;uid=240;uid=241;uid=242;uid=243;uid=244;uid=245;uid=246;uid=247;uid=248;uid=249;uid=250;uid=251;uid=252;uid=253;uid=254;uid=255;uid=256;uid=257;uid=258;uid=259;uid=260;uid=261;uid=262;uid=263;uid=264;uid=265;uid=266;uid=267;uid=268;uid=269;uid=270;uid=271;uid=272;uid=273;uid=274;uid=275;uid=276;uid=277;uid=278;uid=279;uid=280;uid=281;uid=282;uid=283;uid=284;uid=285;uid=286;uid=287;uid=288;uid=289;uid=290;uid=291;uid=292;uid=293;uid=294;uid=295;uid=296;uid=297;uid=298;uid=299;uid=300;uid=301;uid=302;uid=303;uid=304;uid=305;uid=306;uid=307;uid=308;uid=309;uid=310;uid=311;uid=312;uid=313;uid=314;uid=315;uid=316;uid=317;uid=318;uid=319;uid=320;uid=321;uid=322;uid=323;uid=324;uid=325;uid=326;uid=327;uid=328;uid=329;uid=330;uid=331;uid=332;uid=333;uid=334;uid=335;uid=336;uid=337;uid=338;uid=339;uid=340;uid=341;uid=342;uid=343;uid=344;uid=345;uid=346;uid=347;uid=348;uid=349;uid=350;uid=351;uid=352;uid=353;uid=354;uid=355;uid=356;uid=357;uid=358;uid=359;uid=360;uid=361;uid=362;uid=363;uid=364;uid=365;uid=366;uid=367;uid=368;uid=369;uid=370;uid=371;uid=372;uid=373;uid=374;uid=375;uid=376;uid=377;uid=378;uid=379;uid=380;uid=381;uid=382;uid=383;uid=384;uid=385;uid=386;uid=387;uid=388;uid=389;uid=390;uid=391;uid=392;uid=393;uid=394;uid=395;uid=396;uid=397;uid=398;uid=399;uid=400;uid=401;uid=402;uid=403;uid=404;uid=405;uid=406;uid=407;uid=408;uid=409;uid=410;uid=411;uid=412;uid=413;uid=414;uid=415;uid=416;uid=417;uid=418;uid=419;uid=420;uid=421;uid=422;uid=423;uid=424;uid=425;uid=426;uid=427;uid=428;uid=429;uid=430;uid=431;uid=432;uid=433;uid=434;uid=435;uid=436;uid=437;uid=438;uid=439;uid=440;uid=441;uid=442;uid=443;uid=444;uid=445;uid=446;uid=447;uid=448;uid=449;uid=450;uid=451;uid=452;uid=453;uid=454;uid=455;uid=456;uid=457;uid=458;uid=459;uid=460;uid=461;uid=462;uid=463;uid=464;uid=465;uid=466;uid=467;uid=468;uid=469;uid=470;uid=471;uid=472;uid=473;uid=474;uid=475;uid=476;uid=477;uid=478;uid=479;uid=480;uid=481;uid=482;uid=483;uid=484;uid=485;uid=486;uid=487;uid=488;uid=489;uid=490;uid=491;uid=492;uid=493;uid=494;uid=495;uid=496;uid=497;uid=498;uid=499;env=Test;", checkedTicket->DebugInfo());
+    }
+
+    Y_UNIT_TEST(TicketExceptionsTest) {
+        TUserContext::TImpl contextTest(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket1 = contextTest.Check(UNSUPPORTED_VERSION_USER_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::UnsupportedVersion, checkedTicket1->GetStatus());
+
+        auto checkedTicket2 = contextTest.Check(EXPIRED_USER_TICKET);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Expired, checkedTicket2->GetStatus());
+
+        TUserContext::TImpl contextProd(EBlackboxEnv::Prod, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket3 = contextProd.Check(VALID_USER_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::InvalidBlackboxEnv, checkedTicket3->GetStatus());
+
+        UNIT_ASSERT_EXCEPTION(checkedTicket3->GetDefaultUid(), TNotAllowedException);
+        UNIT_ASSERT_EXCEPTION(checkedTicket3->GetUids(), TNotAllowedException);
+        UNIT_ASSERT_EXCEPTION(checkedTicket3->GetScopes(), TNotAllowedException);
+        UNIT_ASSERT_EXCEPTION(checkedTicket3->HasScope(""), TNotAllowedException);
+        UNIT_ASSERT_NO_EXCEPTION(bool(*checkedTicket3));
+        UNIT_ASSERT_NO_EXCEPTION(checkedTicket3->DebugInfo());
+        UNIT_ASSERT_NO_EXCEPTION(checkedTicket3->GetStatus());
+    }
+
+    Y_UNIT_TEST(TicketProtoTest) {
+        ticket2::Ticket protobufTicket;
+        UNIT_ASSERT(protobufTicket.ParseFromString(NUtils::Base64url2bin(USER_TICKET_PROTOBUF)));
+        TTestUserTicketImpl userTicket(ETicketStatus::Ok, std::move(protobufTicket));
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, userTicket.GetStatus());
+        UNIT_ASSERT_EQUAL(std::numeric_limits<time_t>::max(), userTicket.GetExpirationTime());
+        UNIT_ASSERT_EQUAL(TUids({456, 123}), userTicket.GetUids());
+        UNIT_ASSERT_EQUAL(456, userTicket.GetDefaultUid());
+        UNIT_ASSERT_EQUAL(TScopes({"bb:sess1", "bb:sess2"}), userTicket.GetScopes());
+        UNIT_ASSERT(userTicket.HasScope("bb:sess1"));
+        UNIT_ASSERT(userTicket.HasScope("bb:sess2"));
+        UNIT_ASSERT(!userTicket.HasScope("bb:sess3"));
+    }
+
+    Y_UNIT_TEST(ResetKeysTest) {
+        TUserContext::TImpl context(EBlackboxEnv::Test, NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        context.ResetKeys(NUnittest::TVMKNIFE_PUBLIC_KEYS);
+        auto checkedTicket = context.Check(VALID_USER_TICKET_1);
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, checkedTicket->GetStatus());
+    }
+
+    Y_UNIT_TEST(CreateTicketForTests) {
+        TCheckedUserTicket t = NTvmAuth::NUnittest::CreateUserTicket(ETicketStatus::Ok, 42, {"qwerty", "omg"}, {43, 55, 47});
+        UNIT_ASSERT_EQUAL(ETicketStatus::Ok, t.GetStatus());
+        UNIT_ASSERT_EQUAL(42, t.GetDefaultUid());
+        UNIT_ASSERT_EQUAL(TUids({42, 43, 47, 55}), t.GetUids());
+        UNIT_ASSERT_EQUAL(TScopes({"omg", "qwerty"}), t.GetScopes());
+        UNIT_ASSERT_VALUES_EQUAL("ticket_type=user;scope=omg;scope=qwerty;default_uid=42;uid=42;uid=43;uid=47;uid=55;env=Test;", t.DebugInfo());
+    }
+
+    Y_UNIT_TEST(CreateForTests) {
+        TUids uids{456};
+        TScopes scopes{"scope1", "scope2", "scope3"};
+        TScopes scopesIn{"scope1", "scope2", "scope3", "scope1", ""};
+        auto t = TCheckedUserTicket::TImpl::CreateTicketForTests(ETicketStatus::Ok, 456, scopesIn, {});
+        UNIT_ASSERT_VALUES_EQUAL(ETicketStatus::Ok, t->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL(456, t->GetDefaultUid());
+        UNIT_ASSERT_VALUES_EQUAL(uids, t->GetUids());
+        UNIT_ASSERT_VALUES_EQUAL(scopes, t->GetScopes());
+
+        t = TCheckedUserTicket::TImpl::CreateTicketForTests(ETicketStatus::Ok, 456, scopesIn, {123, 456, 789});
+        UNIT_ASSERT_VALUES_EQUAL(ETicketStatus::Ok, t->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL(456, t->GetDefaultUid());
+        uids = TUids{123, 456, 789};
+        UNIT_ASSERT_VALUES_EQUAL(uids, t->GetUids());
+        UNIT_ASSERT_VALUES_EQUAL(scopes, t->GetScopes());
+
+        t = TCheckedUserTicket::TImpl::CreateTicketForTests(ETicketStatus::Ok, 456, scopesIn, {123, 789});
+        UNIT_ASSERT_VALUES_EQUAL(ETicketStatus::Ok, t->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL(456, t->GetDefaultUid());
+        uids = TUids{123, 456, 789};
+        UNIT_ASSERT_VALUES_EQUAL(uids, t->GetUids());
+        UNIT_ASSERT_VALUES_EQUAL(scopes, t->GetScopes());
+
+        t = TCheckedUserTicket::TImpl::CreateTicketForTests(ETicketStatus::Ok, 0, scopesIn, {123, 789});
+        UNIT_ASSERT_VALUES_EQUAL(ETicketStatus::Ok, t->GetStatus());
+        UNIT_ASSERT_VALUES_EQUAL(0, t->GetDefaultUid());
+        uids = TUids{123, 789};
+        UNIT_ASSERT_VALUES_EQUAL(uids, t->GetUids());
+        UNIT_ASSERT_VALUES_EQUAL(scopes, t->GetScopes());
+
+        UNIT_ASSERT_EXCEPTION_CONTAINS(TCheckedUserTicket::TImpl::CreateTicketForTests(ETicketStatus::Ok, 0, scopesIn, {}),
+                                       yexception,
+                                       "User ticket cannot contain empty uid list");
+        UNIT_ASSERT_EXCEPTION_CONTAINS(TCheckedUserTicket::TImpl::CreateTicketForTests(ETicketStatus::Ok, 0, scopesIn, {0}),
+                                       yexception,
+                                       "User ticket cannot contain empty uid list");
+    }
+}
+
+template <>
+void Out<NTvmAuth::TUids>(IOutputStream& o, const NTvmAuth::TUids& v) {
+    for (const auto& uid : v) {
+        o << uid << ",";
+    }
+}
+
+template <>
+void Out<NTvmAuth::TScopes>(IOutputStream& o, const NTvmAuth::TScopes& v) {
+    for (const auto& scope : v) {
+        o << scope << ",";
+    }
+}
diff --git a/library/cpp/tvmauth/src/ut/utils_ut.cpp b/library/cpp/tvmauth/src/ut/utils_ut.cpp
new file mode 100644
index 0000000000..c9cb81c36f
--- /dev/null
+++ b/library/cpp/tvmauth/src/ut/utils_ut.cpp
@@ -0,0 +1,95 @@
+#include <library/cpp/tvmauth/src/utils.h>
+
+#include <library/cpp/testing/unittest/registar.h>
+
+#include <util/generic/maybe.h>
+
+Y_UNIT_TEST_SUITE(UtilsTestSuite) {
+    static const TString VALID_SERVICE_TICKET_1 = "3:serv:CBAQ__________9_IhkI5QEQHBoIYmI6c2VzczEaCGJiOnNlc3My:WUPx1cTf05fjD1exB35T5j2DCHWH1YaLJon_a4rN-D7JfXHK1Ai4wM4uSfboHD9xmGQH7extqtlEk1tCTCGm5qbRVloJwWzCZBXo3zKX6i1oBYP_89WcjCNPVe1e8jwGdLsnu6PpxL5cn0xCksiStILH5UmDR6xfkJdnmMG94o8";
+    static const TString EXPIRED_SERVICE_TICKET = "3:serv:CBAQACIZCOUBEBwaCGJiOnNlc3MxGghiYjpzZXNzMg:IwfMNJYEqStY_SixwqJnyHOMCPR7-3HHk4uylB2oVRkthtezq-OOA7QizDvx7VABLs_iTlXuD1r5IjufNei_EiV145eaa3HIg4xCdJXCojMexf2UYJz8mF2b0YzFAy6_KWagU7xo13CyKAqzJuQf5MJcSUf0ecY9hVh36cJ51aw";
+    using namespace NTvmAuth;
+
+    Y_UNIT_TEST(base64Test) {
+        UNIT_ASSERT_VALUES_EQUAL("-hHx", NUtils::Bin2base64url("\xfa\x11\xf1"));
+        UNIT_ASSERT_VALUES_EQUAL("-hHx_g", NUtils::Bin2base64url("\xfa\x11\xf1\xfe"));
+        UNIT_ASSERT_VALUES_EQUAL("-hHx_v8", NUtils::Bin2base64url("\xfa\x11\xf1\xfe\xff"));
+
+        UNIT_ASSERT_VALUES_EQUAL("", NUtils::Base64url2bin("hHx++"));
+        UNIT_ASSERT_VALUES_EQUAL("", NUtils::Base64url2bin("&*^"));
+        UNIT_ASSERT_VALUES_EQUAL("", NUtils::Base64url2bin(""));
+        UNIT_ASSERT_VALUES_EQUAL("", NUtils::Bin2base64url(""));
+
+        UNIT_ASSERT_VALUES_EQUAL("\xfa\x11\xf1", NUtils::Base64url2bin("-hHx"));
+        UNIT_ASSERT_VALUES_EQUAL("\xfa\x11\xf1\xfe", NUtils::Base64url2bin("-hHx_g"));
+        UNIT_ASSERT_VALUES_EQUAL("\xfa\x11\xf1\xfe", NUtils::Base64url2bin("-hHx_g="));
+        UNIT_ASSERT_VALUES_EQUAL("\xfa\x11\xf1\xfe", NUtils::Base64url2bin("-hHx_g=="));
+        UNIT_ASSERT_VALUES_EQUAL("\xfa\x11\xf1\xfe\xff", NUtils::Base64url2bin("-hHx_v8"));
+        UNIT_ASSERT_VALUES_EQUAL("\xfa\x11\xf1\xfe\xff", NUtils::Base64url2bin("-hHx_v8="));
+
+        UNIT_ASSERT_VALUES_EQUAL("SGVsbG8sIGV2ZXJ5Ym9keSE",
+                                 NUtils::Bin2base64url(("Hello, everybody!")));
+        UNIT_ASSERT_VALUES_EQUAL("Hello, everybody!",
+                                 NUtils::Base64url2bin(("SGVsbG8sIGV2ZXJ5Ym9keSE")));
+        UNIT_ASSERT_VALUES_EQUAL("VGhlIE1hZ2ljIFdvcmRzIGFyZSBTcXVlYW1pc2ggT3NzaWZyYWdl",
+                                 NUtils::Bin2base64url(("The Magic Words are Squeamish Ossifrage")));
+        UNIT_ASSERT_VALUES_EQUAL("The Magic Words are Squeamish Ossifrage",
+                                 NUtils::Base64url2bin(("VGhlIE1hZ2ljIFdvcmRzIGFyZSBTcXVlYW1pc2ggT3NzaWZyYWdl")));
+    }
+
+    Y_UNIT_TEST(sign) {
+        UNIT_ASSERT_VALUES_EQUAL("wkGfeuopf709ozPAeGcDMqtZXPzsWvuNJ1BL586dSug",
+                                 NUtils::SignCgiParamsForTvm(NUtils::Base64url2bin("GRMJrKnj4fOVnvOqe-WyD1"),
+                                                             "1490000000",
+                                                             "13,19",
+                                                             "bb:sess,bb:sess2"));
+
+        UNIT_ASSERT_VALUES_EQUAL("HANDYrA4ApQMQ5cfSWZk_InHWJffoXAa57P_X_B5s4M",
+                                 NUtils::SignCgiParamsForTvm(NUtils::Base64url2bin("GRMJrKnj4fOasvOqe-WyD1"),
+                                                             "1490000000",
+                                                             "13,19",
+                                                             "bb:sess,bb:sess2"));
+
+        UNIT_ASSERT_VALUES_EQUAL("T-M-3_qtjRM1dR_3hS1CRlHBTZRKK04doHXBJw-5VRk",
+                                 NUtils::SignCgiParamsForTvm(NUtils::Base64url2bin("GRMJrKnj4fOasvOqe-WyD1"),
+                                                             "1490000001",
+                                                             "13,19",
+                                                             "bb:sess,bb:sess2"));
+
+        UNIT_ASSERT_VALUES_EQUAL("gwB6M_9Jij50ZADmlDMnoyLc6AhQmtq6MClgGzO1PBE",
+                                 NUtils::SignCgiParamsForTvm(NUtils::Base64url2bin("GRMJrKnj4fOasvOqe-WyD1"),
+                                                             "1490000001",
+                                                             "13,19",
+                                                             ""));
+    }
+
+    Y_UNIT_TEST(GetExpirationTime) {
+        UNIT_ASSERT(!NTvmAuth::NInternal::TCanningKnife::GetExpirationTime("3:aadasdasdasdas"));
+
+        UNIT_ASSERT(NTvmAuth::NInternal::TCanningKnife::GetExpirationTime(VALID_SERVICE_TICKET_1));
+        UNIT_ASSERT_VALUES_EQUAL(TInstant::Seconds(std::numeric_limits<time_t>::max()),
+                                 *NTvmAuth::NInternal::TCanningKnife::GetExpirationTime(VALID_SERVICE_TICKET_1));
+
+        UNIT_ASSERT(NTvmAuth::NInternal::TCanningKnife::GetExpirationTime(EXPIRED_SERVICE_TICKET));
+        UNIT_ASSERT_VALUES_EQUAL(TInstant::Seconds(0),
+                                 *NTvmAuth::NInternal::TCanningKnife::GetExpirationTime(EXPIRED_SERVICE_TICKET));
+    }
+
+    Y_UNIT_TEST(RemoveSignatureTest) {
+        UNIT_ASSERT_VALUES_EQUAL("1:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds",
+                                 NUtils::RemoveTicketSignature("1:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("2:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds",
+                                 NUtils::RemoveTicketSignature("2:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("4:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds",
+                                 NUtils::RemoveTicketSignature("4:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("3.serv.ASDkljbjhsdbfLJHABFJHBslfbsfjs.asdxcvbxcvniueliuweklsvds",
+                                 NUtils::RemoveTicketSignature("3.serv.ASDkljbjhsdbfLJHABFJHBslfbsfjs.asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:",
+                                 NUtils::RemoveTicketSignature("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:",
+                                 NUtils::RemoveTicketSignature("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs:asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("3:serv:",
+                                 NUtils::RemoveTicketSignature("3:serv:ASDkljbjhsdbfLJHABFJHBslfbsfjs.asdxcvbxcvniueliuweklsvds"));
+        UNIT_ASSERT_VALUES_EQUAL("asdxcbvfgdsgfasdfxczvdsgfxcdvbcbvf",
+                                 NUtils::RemoveTicketSignature("asdxcbvfgdsgfasdfxczvdsgfxcdvbcbvf"));
+    }
+}
diff --git a/library/cpp/tvmauth/src/ut/version_ut.cpp b/library/cpp/tvmauth/src/ut/version_ut.cpp
new file mode 100644
index 0000000000..eeb95d1cde
--- /dev/null
+++ b/library/cpp/tvmauth/src/ut/version_ut.cpp
@@ -0,0 +1,18 @@
+#include <library/cpp/tvmauth/version.h>
+
+#include <library/cpp/testing/unittest/registar.h>
+
+#include <regex>
+
+using namespace NTvmAuth;
+
+Y_UNIT_TEST_SUITE(VersionTest) {
+    Y_UNIT_TEST(base64Test) {
+        const std::regex re(R"(^\d+\.\d+\.\d+$)");
+
+        for (size_t idx = 0; idx < 2; ++idx) {
+            TStringBuf ver = LibVersion();
+            UNIT_ASSERT(std::regex_match(ver.begin(), ver.end(), re));
+        }
+    }
+}